test: Ignore kpatch check error about repomd.xml

Sometimes tests like TestUpdates.testBasic log this error message. This
is fallout from commit 5ac51ec, breaks a lot of test runs right
now, and isn't terribly important; so ignore it for now.

test/common/packagelib.py

@@ -121,6 +121,9 @@ def setUp(self):
 
         self.updateInfo = {}
 
+        # HACK: kpatch check sometimes complains that we don't set up repomd.xml
+        self.allow_browser_errors("Could not determine kpatch packages:.*repodata updates was not complete.*repomd.xml")
+
     #
     # Helper functions for creating packages/repository
     #