Include a `.pipeline/config.yaml` with "test", "rehearse", and "publish"
pipelines defined which are scheduled by Zuul during "test",
"gate-and-submit", and "postmerge" respectively.
Depends-On: I835668eaee08bb4890cd1e3cfea2cdb84779352f
Change-Id: I3c63ad63b7d504a3204c6533a2cd8f00ca48492b