github OST automation

workflows/ost.yaml - reusable workflow job, referred from individual projects

example-trigger.yaml - example how to invoke from projects

jenkins file contains the code on jenkins side in 2 sections

• Build Trigger
  • configure with SCM Build trigger use "[ScriptTrigger] - Poll with a shell or batch script". Paste the first part only, provide IP= at the top
• Actual job steps
  • initial step - paste first and second part together. You must provide IP= and RHEL= strings at the top, and in Build Environment use secret file OST_APP_PRIVATE_KEY_FILENAME
  • inject variables from "vars"
  • conditinal step(multiple) if build is still succeeding at this point
    • for ost-images runs only:
      • build specific ost-image first when CUSTOM_OST_IMAGES is set to a string "build-me-some". Will be filled in by build-image job for the respective ost-images refspec from PR
      • inject vars again, overriding OST_REFSPEC to empty (to run stock basic-suite-master code) and CUSTOM_OST_IMAGES set to the resulting repo from build-image
    • call out the actual OST job with CUSTOM_REPOS=${PR_URL} and OST_IMAGE=${OST_IMAGE} set
    • processing step - paste second part only, and make sure it gets executed regardless the OST job result

nginx contains manual installation steps on a self-hosted runner, with matching label in ost.yaml