meta-fii/meta-kudo: follow the new Yocto override syntax change

Changing the syntax for various yocto files ie. (_ to :) changes to
bb, bbappend and conf files.

Signed-off-by: Mohaimen Alsamarai <mohaimen.alsamarai@fii-na.com>
Change-Id: If25577ee9d98398c1a1ab7f85a0373c46af70245
diff --git a/meta-fii/meta-kudo/conf/local.conf.sample b/meta-fii/meta-kudo/conf/local.conf.sample
index 2bd1c09..ed6eb49 100644
--- a/meta-fii/meta-kudo/conf/local.conf.sample
+++ b/meta-fii/meta-kudo/conf/local.conf.sample
@@ -1,7 +1,7 @@
 MACHINE ??= "kudo"
 DISTRO ?= "openbmc-kudo"
 PACKAGE_CLASSES ?= "package_rpm"
-SANITY_TESTED_DISTROS_append ?= " *"
+SANITY_TESTED_DISTROS:append ?= " *"
 EXTRA_IMAGE_FEATURES = "debug-tweaks"
 USER_CLASSES ?= "buildstats image-prelink"
 PATCHRESOLVE = "noop"
@@ -14,5 +14,5 @@
     ABORT,${DL_DIR},100M,1K \
     ABORT,${SSTATE_DIR},100M,1K \
     ABORT,/tmp,10M,1K"
-CONF_VERSION = "1"
+CONF_VERSION = "2"