Merge "devstack job: Add irrelevant-files"

.zuul.yaml

@@ -80,6 +80,14 @@
     pre-run: playbooks/pre.yaml
     run: playbooks/devstack.yaml
     post-run: playbooks/post.yaml
+    irrelevant-files:
+      # Documentation related
+      - ^.*\.rst$
+      - ^api-ref/.*$
+      - ^doc/.*$
+      - ^releasenotes/.*$
+      # Translations
+      - ^.*/locale/.*po$
 
 - job:
     name: devstack-multinode