Skip devstack jobs on locale-only changes

those changes does not affect devstack intergrated testing at all,
running them on translation imports from Zanata is useless.

Change-Id: I6d70b46c2a0b8356949fcf8682fb15a741813eca

zuul.d/legacy-ironic-inspector-jobs.yaml

@@ -17,6 +17,7 @@
       - ^.*\.rst$
       - ^doc/.*$
       - ^ironic_inspector/test/(?!.*tempest).*$
+      - ^ironic_inspector/locale/.*$
       - ^releasenotes/.*$
       - ^setup.cfg$
       - ^tox.ini$