Prepare runRully for longevity testing

- refactor in favor of setupDockerAndTest()
- move out all the files/env_vars logic
- return a map of cmds for setupDockerAndTest()

Change-Id: Ic1dc2f2362820c02014c48dde3b1ac4203f1dc85
Related-PROD: PROD-25363 (PROD:25363)
1 file changed