Skip openstack-check jobs on opendev watcher .zuul.yaml changes

openstack-check jobs runs content provider and edpm jobs. It does
not have any relationship with .zuul.yaml. So skip running
openstack-check pipeline on these changes to avoid wasting
resources.

Signed-off-by: Chandan Kumar (raukadah) <raukadah@gmail.com>

Author: raukadah

.zuul.yaml

@@ -287,6 +287,7 @@
               - ^setup.cfg$
               - ^tools/.*$
               - ^tox.ini$
+              - ^.zuul.yaml
             # Build watcher-operator always in meta content provider
             vars:
               cifmw_operator_build_operators: