meta-facebook: prep for new override syntax

Ran `scripts/contrib/convert-overrides.py` from upstream Yocto and
fixed up a few by hand that were missed.

Tested: Built bletchley and tiogapass.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I0489ba007132901697e4ef1a29b03a3591b3ee3b
diff --git a/meta-facebook/recipes-phosphor/packagegroups/packagegroup-obmc-apps.bbappend b/meta-facebook/recipes-phosphor/packagegroups/packagegroup-obmc-apps.bbappend
index dbcc895..d7953e1 100644
--- a/meta-facebook/recipes-phosphor/packagegroups/packagegroup-obmc-apps.bbappend
+++ b/meta-facebook/recipes-phosphor/packagegroups/packagegroup-obmc-apps.bbappend
@@ -1,5 +1,5 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
+FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
 
-PACKAGES_remove_fb-nohost = "\
+PACKAGES:remove:fb-nohost = "\
         ${PN}-console \
         "