Convert to new override syntax

This is the result of automated script conversion:

scripts/contrib/convert-overrides.py <oe-core directory>

converting the metadata to use ":" as the override character instead of "_".

(From OE-Core rev: 42344347be29f0997cc2f7636d9603b1fe1875ae)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/runtime/cases/ksample.py

@@ -10,7 +10,7 @@ from oeqa.core.decorator.depends import OETestDepends
 from oeqa.core.decorator.data import skipIfNotFeature
 
 # need some kernel fragments
-# echo "KERNEL_FEATURES_append += \" features\/kernel\-sample\/kernel\-sample.scc\"" >> local.conf
+# echo "KERNEL_FEATURES:append += \" features\/kernel\-sample\/kernel\-sample.scc\"" >> local.conf
 class KSample(OERuntimeTestCase):
     def cmd_and_check(self, cmd='', match_string=''):
         status, output = self.target.run(cmd)

meta/lib/oeqa/runtime/cases/skeletoninit.py

@@ -4,7 +4,7 @@
 
 # This test should cover https://bugzilla.yoctoproject.org/tr_show_case.cgi?case_id=284
 # testcase. Image under test must have meta-skeleton layer in bblayers and
-# IMAGE_INSTALL_append = " service" in local.conf
+# IMAGE_INSTALL:append = " service" in local.conf
 from oeqa.runtime.case import OERuntimeTestCase
 from oeqa.core.decorator.depends import OETestDepends
 from oeqa.core.decorator.data import skipIfDataVar