Merge "Fix passing labels to Gerrit when they are not defined in All-Projects" into feature/zuulv3
diff --git a/zuul/driver/gerrit/gerritconnection.py b/zuul/driver/gerrit/gerritconnection.py
index 06962e5..bc587b9 100644
--- a/zuul/driver/gerrit/gerritconnection.py
+++ b/zuul/driver/gerrit/gerritconnection.py
@@ -625,7 +625,7 @@
             if val is True:
                 cmd += ' --%s' % key
             else:
-                cmd += ' --%s %s' % (key, val)
+                cmd += ' --label %s=%s' % (key, val)
         cmd += ' %s' % change
         out, err = self._ssh(cmd)
         return err