Run integrated test if zuul.yaml file is changed

zuul.yaml file contain many jobs definition and base class.
Any change in this file can impact other job definition. Also,
many times we want to test the full integrated gate if this
file is changed or if depends-on is changing some global setting,
for example: https://review.opendev.org/c/openstack/glance/+/883602/1

Change-Id: I14abd88944407da17ca81b77c079262565ff71c6

.zuul.yaml

@@ -331,7 +331,6 @@
               - ^releasenotes/.*$
               - ^tools/.*$
               - ^tox.ini$
-              - ^\.zuul\.yaml$
         - tempest-integrated-storage:
             irrelevant-files: *tempest-irrelevant-files
         - tempest-integrated-storage-enforce-scope-new-defaults: