oeqa/runtime/opkg: skip install on read-only-rootfs

Images can have package management enabled, but be
generally running as read-only. In this case, the
test fails at the moment with various errors due to
that.

Use the new @skipIfFeature decorator to also skip
this test in that case.

(From OE-Core rev: 84640e2b4daf4cf22c5b0324c22332f59e4d51e3)

Signed-off-by: André Draszik <git@andred.net>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

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

@@ -5,7 +5,7 @@
 import os
 from oeqa.utils.httpserver import HTTPService
 from oeqa.runtime.case import OERuntimeTestCase
-from oeqa.core.decorator.data import skipIfNotDataVar, skipIfNotFeature
+from oeqa.core.decorator.data import skipIfNotDataVar, skipIfNotFeature, skipIfFeature
 from oeqa.runtime.decorator.package import OEHasPackage
 
 class OpkgTest(OERuntimeTestCase):
@@ -45,6 +45,8 @@ class OpkgRepoTest(OpkgTest):
                       'Test requires package-management to be in IMAGE_FEATURES')
     @skipIfNotDataVar('IMAGE_PKGTYPE', 'ipk',
                       'IPK is not the primary package manager')
+    @skipIfFeature('read-only-rootfs',
+                   'Test does not work with read-only-rootfs in IMAGE_FEATURES')
     @OEHasPackage(['opkg'])
     def test_opkg_install_from_repo(self):
         self.setup_source_config_for_package_install()