Set periodic tempest jobs to run with master

This commit changes the periodic qa jobs to run with the master branch.
It also changes it so only the stress tests and the all job are run. The
other jobs already get coverage in the gate so there isn't any value in
running them daily.

Change-Id: Id926eef893f02c78954dacdc6fbfc6bc14461529
Merge "Set periodic tempest jobs to run with master"