[CI] Do not run tempest job on molecule changes

Noticed in [1] where this job is used.

[1] openstack-k8s-operators/edpm-ansible#1134

Author: karelyatin

zuul.d/jobs.yaml

@@ -24,6 +24,7 @@
       - ^PROJECT$
       - ^README.md$
       - tests?\/functional
+      - roles/.*/molecule/.*
     vars:
       cifmw_kuttl_tests_operator_list:
         - openstack