[ci] Provide a zuul status to github when irrelevant files are changed

Adds the no-op job from feature-verificaton-tests, which will run and
provide a passing status from zuul.
This is needed because github expects a status from zuul before it can
mark a PR as passing/failing CI.

Author: elfiesmelfie

zuul.d/projects.yaml

@@ -116,3 +116,4 @@
         - functional-logging-tests-osp18: *fvt_jobs_config
         - functional-graphing-tests-osp18: *fvt_jobs_config
         - functional-metric-verification-tests-osp18: *fvt_jobs_config
+        - feature-verification-tests-noop