Update custom tito tagger for new version

Tito upstream changed the method signature of the version to tag
resolution routine. We need to update our implementation to stay in
sync.

Signed-off-by: Steve Kuznetsov <[email protected]>

Author: stevekuznetsov

.tito/lib/origin/tagger/__init__.py

@@ -39,6 +39,6 @@ def _tag_release(self):
         inject_os_git_vars(self.spec_file)
         super(OriginTagger, self)._tag_release()
 
-    def _get_tag_for_version(self, version):
+    def _get_tag_for_version(self, version, release=None):
         return "v{}".format(version)
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