meta-google: Cleanup for Yocto override syntax change

```
convert-overrides.py meta-google

git grep "_[a-z0-9_/-]*[ :]" -- meta-google | grep ".bb"

git grep -l _gbmc -- meta-google | grep ".bb" \
  | xargs sed -i 's/_gbmc/:gbmc/'
git grep -l _prod -- meta-google | grep ".bb" \
  | xargs sed -i 's/_prod/:prod/'
git grep -l _dev -- meta-google | grep ".bb" \
  | xargs sed -i 's/_dev/:dev/'
git grep -l _hoth -- meta-google | grep ".bb" \
  | xargs sed -i 's/_hoth/:hoth/'
git grep -l _bandaid -- meta-google | grep ".bb" \
  | xargs sed -i 's/_bandaid/:bandaid/'
```

Some small fix includes
```
platforms_gbmc_bringup
platforms_gbmc_secure
```

Tested:
```
$  git grep "_[a-z0-9_/-]*[ :]" -- meta-google | grep ".bb"
meta-google/recipes-connectivity/avahi/avahi_%.bbappend:do_install:append:gbmc() {
meta-google/recipes-core/dropbear/dropbear_%.bbappend:do_install:append:gbmc:dev() {
meta-google/recipes-core/dropbear/dropbear_%.bbappend:  echo '    chain gbmc_br_pub_input {' >>"$rules"
meta-google/recipes-extended/libconfig/conf2struct-native_git.bb:    oe_runmake checker
meta-google/recipes-extended/libconfig/conf2struct-native_git.bb:    oe_runmake install
meta-google/recipes-extended/networking/mstpd_git.bb:do_install:append() {
meta-google/recipes-extended/networking/sslh_git.bb:  oe_runmake distclean
meta-google/recipes-extended/networking/sslh_git.bb:  oe_runmake sslh-conf.h
meta-google/recipes-extended/networking/sslh_git.bb:  oe_runmake install
meta-google/recipes-google/ipmi/ipmi-fru-sh.bb:do_install:append() {
meta-google/recipes-google/ncsi/gbmc-ncsi-config.bb:do_install:append() {
meta-google/recipes-google/networking/gbmc-bridge.bb:do_rm_work:prepend() {
meta-google/recipes-google/networking/gbmc-bridge.bb:  # HACK: Work around broken do_rm_work not properly calling rm with `--`
meta-google/recipes-google/networking/gbmc-ip-monitor.bb:do_install:append() {
meta-google/recipes-google/networking/gbmc-iperf3.bb:do_install:append:dev() {
meta-google/recipes-google/networking/gbmc-iperf3.bb:  echo '    chain gbmc_br_pub_input {' >>"$rules"
meta-google/recipes-google/networking/gbmc-mac-config.bb:do_install:append() {
meta-google/recipes-google/networking/network-sh.bb:do_install:append() {
meta-google/recipes-google/ssh/authorized-keys-comp.bb:SUMMARY = "Compiles a set of authorized_keys files into a single file"
meta-google/recipes-google/ssh/authorized-keys-comp.bb:do_install:append() {
meta-google/recipes-google/systemd/gbmc-systemd-config.bb:do_install:append:dev() {
meta-google/recipes-google/test/test-sh.bb:do_install:append() {
meta-google/recipes-phosphor/flash/inplace-gbmc-update.bb:do_install:prepend:dev() {
meta-google/recipes-phosphor/host/phosphor-host-postd_%.bbappend:do_install:append:gbmc:dev() {
meta-google/recipes-phosphor/initrdscripts/obmc-phosphor-initfs.bbappend:do_install:append:gbmc:dev() {
meta-google/recipes-phosphor/initrdscripts/obmc-phosphor-initfs.bbappend:do_install:append:gbmc:prod() {
meta-google/recipes-phosphor/ipmi/phosphor-ipmi-config.bbappend:do_install:append:gbmc() {
meta-google/recipes-phosphor/ipmi/phosphor-ipmi-config.bbappend:  overlapping="$(jq '."${GBMCBR_IPMI_CHANNEL}" | .is_valid and .name != "gbmcbr"' $chjson)"
```

Change-Id: I9d610c664bd44e8bd81fb8f7e76249a0b43b9ffd
Signed-off-by: Willy Tu <wltu@google.com>
diff --git a/meta-google/recipes-google/networking/gbmc-bridge.bb b/meta-google/recipes-google/networking/gbmc-bridge.bb
index 37af84b..dea14f0 100644
--- a/meta-google/recipes-google/networking/gbmc-bridge.bb
+++ b/meta-google/recipes-google/networking/gbmc-bridge.bb
@@ -5,7 +5,7 @@
 
 inherit systemd
 
-FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
+FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
 SRC_URI += " \
   file://-bmc-gbmcbr.netdev \
   file://-bmc-gbmcbr.network.in \
@@ -22,14 +22,14 @@
   file://gbmc-br-nft.sh \
   "
 
-FILES_${PN}_append = " \
+FILES:${PN}:append = " \
   ${datadir}/gbmc-ip-monitor \
   ${systemd_unitdir}/network \
   ${sysconfdir}/nftables \
   ${sysconfdir}/avahi/services \
   "
 
-RDEPENDS_${PN}_append = " \
+RDEPENDS:${PN}:append = " \
   bash \
   gbmc-ip-monitor \
   mstpd-mstpd \
@@ -37,7 +37,7 @@
   ndisc6-rdisc6 \
   "
 
-SYSTEMD_SERVICE_${PN} += "gbmc-br-ensure-ra.service"
+SYSTEMD_SERVICE:${PN} += "gbmc-br-ensure-ra.service"
 
 GBMC_BR_MAC_ADDR ?= ""
 
@@ -98,7 +98,7 @@
   install -m0755 ${WORKDIR}/gbmc-br-ensure-ra.service ${D}${systemd_system_unitdir}/
 }
 
-do_rm_work_prepend() {
+do_rm_work:prepend() {
   # HACK: Work around broken do_rm_work not properly calling rm with `--`
   # It doesn't like filenames that start with `-`
   rm -rf -- ${WORKDIR}/-*
diff --git a/meta-google/recipes-google/networking/gbmc-ip-monitor.bb b/meta-google/recipes-google/networking/gbmc-ip-monitor.bb
index 3280430..1bf35bc 100644
--- a/meta-google/recipes-google/networking/gbmc-ip-monitor.bb
+++ b/meta-google/recipes-google/networking/gbmc-ip-monitor.bb
@@ -15,18 +15,18 @@
 
 DEPENDS += "test-sh"
 
-RDEPENDS_${PN} += " \
+RDEPENDS:${PN} += " \
   bash \
   iproute2 \
   "
 
-SYSTEMD_SERVICE_${PN} += "gbmc-ip-monitor.service"
+SYSTEMD_SERVICE:${PN} += "gbmc-ip-monitor.service"
 
 do_compile() {
   SYSROOT="$PKG_CONFIG_SYSROOT_DIR" bash gbmc-ip-monitor-test.sh || exit
 }
 
-do_install_append() {
+do_install:append() {
   install -d -m0755 ${D}${libexecdir}
   install -m0755 gbmc-ip-monitor.sh ${D}${libexecdir}/
 
diff --git a/meta-google/recipes-google/networking/gbmc-iperf3.bb b/meta-google/recipes-google/networking/gbmc-iperf3.bb
index 27ebdb7..3b78a40 100644
--- a/meta-google/recipes-google/networking/gbmc-iperf3.bb
+++ b/meta-google/recipes-google/networking/gbmc-iperf3.bb
@@ -5,11 +5,11 @@
 
 inherit systemd
 
-RDEPENDS_${PN} += "iperf3"
+RDEPENDS:${PN} += "iperf3"
 
 SRC_URI += "file://iperf3.service"
 
-SYSTEMD_SERVICE_${PN} += "iperf3.service"
+SYSTEMD_SERVICE:${PN} += "iperf3.service"
 
 do_install() {
   # Install service definitions
@@ -18,7 +18,7 @@
 }
 
 # Allow IPERF3 to run on the gbmcbr node on DEV builds
-do_install_append_dev() {
+do_install:append:dev() {
   nftables_dir=${D}${sysconfdir}/nftables
   rules=$nftables_dir/50-gbmc-iperf3-dev.rules
   install -d -m0755 $nftables_dir
diff --git a/meta-google/recipes-google/networking/gbmc-mac-config.bb b/meta-google/recipes-google/networking/gbmc-mac-config.bb
index 6ca4c79..7a3781d 100644
--- a/meta-google/recipes-google/networking/gbmc-mac-config.bb
+++ b/meta-google/recipes-google/networking/gbmc-mac-config.bb
@@ -12,14 +12,14 @@
 
 S = "${WORKDIR}"
 
-RDEPENDS_${PN} += " \
+RDEPENDS:${PN} += " \
   bash \
   ipmi-fru-sh \
   "
 
-FILES_${PN} += "${systemd_unitdir}"
+FILES:${PN} += "${systemd_unitdir}"
 
-SYSTEMD_SERVICE_${PN} += "gbmc-mac-config.service"
+SYSTEMD_SERVICE:${PN} += "gbmc-mac-config.service"
 
 GBMC_MAC_EEPROM_OF_NAME ?= ""
 
@@ -28,7 +28,7 @@
 #   Ex. "[0]=eth0 [2]=eth2"
 GBMC_MAC_IF_MAP ?= ""
 
-do_install_append() {
+do_install:append() {
   if [ -z '${GBMC_MAC_EEPROM_OF_NAME}' ]; then
     echo 'Missing GBMC_MAC_EEPROM_OF_NAME' >&2
     exit 1
diff --git a/meta-google/recipes-google/networking/google-usb-network_git.bb b/meta-google/recipes-google/networking/google-usb-network_git.bb
index ec51eaa..f0d15b9 100644
--- a/meta-google/recipes-google/networking/google-usb-network_git.bb
+++ b/meta-google/recipes-google/networking/google-usb-network_git.bb
@@ -6,16 +6,16 @@
 LICENSE = "Apache-2.0"
 LIC_FILES_CHKSUM = "file://${COREBASE}/meta/files/common-licenses/Apache-2.0;md5=89aea4e17d99a7cacdbeed46a0096b10"
 
-FILESEXTRAPATHS_prepend = "${THISDIR}/${PN}:"
+FILESEXTRAPATHS:prepend = "${THISDIR}/${PN}:"
 
 inherit systemd
 
 DEPENDS += "m4-native"
 DEPENDS += "systemd"
-RDEPENDS_${PN} += "bash"
+RDEPENDS:${PN} += "bash"
 
 SYSTEMD_PACKAGES = "${PN}"
-SYSTEMD_SERVICE_${PN} = "usb_network.service"
+SYSTEMD_SERVICE:${PN} = "usb_network.service"
 
 BMC_IP_ADDR ??= "169.254.95.118/16"
 BMC_USB_ECM_PRODUCT_ID ??= ""
@@ -30,8 +30,8 @@
 SRC_URI += "file://usb_network.service.m4"
 SRC_URI += "file://usb_network.sh"
 
-FILES_${PN} = "${bindir}/usb_network.sh"
-FILES_${PN}_append = " ${systemd_unitdir}/network/${BMC_USB_CONFIG_FILENAME}"
+FILES:${PN} = "${bindir}/usb_network.sh"
+FILES:${PN}:append = " ${systemd_unitdir}/network/${BMC_USB_CONFIG_FILENAME}"
 
 do_compile() {
     test "X${BMC_IP_ADDR}" != "X" || bberror "Please define BMC_IP_ADDR"
diff --git a/meta-google/recipes-google/networking/network-sh.bb b/meta-google/recipes-google/networking/network-sh.bb
index a377b9e..921795b 100644
--- a/meta-google/recipes-google/networking/network-sh.bb
+++ b/meta-google/recipes-google/networking/network-sh.bb
@@ -3,13 +3,13 @@
 LICENSE = "Apache-2.0"
 LIC_FILES_CHKSUM = "file://${COREBASE}/meta/files/common-licenses/Apache-2.0;md5=89aea4e17d99a7cacdbeed46a0096b10"
 
-FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
+FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
 SRC_URI += "file://lib.sh"
 SRC_URI += "file://test.sh"
 S = "${WORKDIR}"
 
 DATA = "${datadir}/network"
-FILES_${PN} += "${DATA}"
+FILES:${PN} += "${DATA}"
 
 DEPENDS += "test-sh"
 
@@ -17,7 +17,7 @@
   SYSROOT="$PKG_CONFIG_SYSROOT_DIR" bash test.sh || exit
 }
 
-do_install_append() {
+do_install:append() {
   install -d -m0755 ${D}${DATA}
   install -m0644 lib.sh ${D}${DATA}/
 }