Make package-and-qa builds run in parallel with spec jobs

1. Make spec jobs have necessary needs to start them immediately when they can be
2. Move Trigger:(ce|ee)-package job to the end so that they don't block the pipeline
   1. Also define empty needs on them so they can be started irrespective of spec pipeline
   2. This needed Trigger:measure-memory job to be on its own Trigger:* stage.
3. Move Provisioner and RAT pipelines to be on trigger-qa job, since that is what they essentially do.
4. Increase timeout of Trigger job to be 4h, since it needs to wait for both package and qa pipelines