oeqa/selftest/signing: Fix for hash equivlance server

There were two issues with the test one is that an equivalent hash
could come from the server meaning the signature didn't change when it
should. A uuid string is injected to ensure this does not happen.

If there were multiple warnings the test would also fail as only the
first is prefixed with WARNING. Tweak the string to avoid that failure
mode.

(From OE-Core rev: e58eaf5b8c93521dc311b77593e0dd7debca602d)

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

meta/lib/oeqa/selftest/cases/signing.py

@@ -180,6 +180,8 @@ class LockedSignatures(OESelftestTestCase):
         AutomatedBy: Daniel Istrate <daniel.alexandrux.istrate@intel.com>
         """
 
+        import uuid
+
         test_recipe = 'ed'
         locked_sigs_file = 'locked-sigs.inc'
 
@@ -197,9 +199,10 @@ class LockedSignatures(OESelftestTestCase):
         bitbake(test_recipe)
 
         # Make a change that should cause the locked task signature to change
+        # Use uuid so hash equivalance server isn't triggered
         recipe_append_file = test_recipe + '_' + get_bb_var('PV', test_recipe) + '.bbappend'
         recipe_append_path = os.path.join(self.testlayer_path, 'recipes-test', test_recipe, recipe_append_file)
-        feature = 'SUMMARY += "test locked signature"\n'
+        feature = 'SUMMARY_${PN} = "test locked signature%s"\n' % uuid.uuid4()
 
         os.mkdir(os.path.join(self.testlayer_path, 'recipes-test', test_recipe))
         write_file(recipe_append_path, feature)
@@ -210,7 +213,7 @@ class LockedSignatures(OESelftestTestCase):
         ret = bitbake(test_recipe)
 
         # Verify you get the warning and that the real task *isn't* run (i.e. the locked signature has worked)
-        patt = r'WARNING: The %s:do_package sig is computed to be \S+, but the sig is locked to \S+ in SIGGEN_LOCKEDSIGS\S+' % test_recipe
+        patt = r'The %s:do_package sig is computed to be \S+, but the sig is locked to \S+ in SIGGEN_LOCKEDSIGS\S+' % test_recipe
         found_warn = re.search(patt, ret.output)
 
         self.assertIsNotNone(found_warn, "Didn't find the expected warning message. Output: %s" % ret.output)