Run heat_integrationtests in parallel

This should improve the turnaround time of the gate tests and
also make room for more integration tests.

Also, remove duplicate addCleanup.

Change-Id: Iacdd554ee13bb87b0b71ebf547209f94e945f342
1 file changed
tree: b5f642177ff7bb5432d2ef4e58067ecffe2c2406
  1. common/
  2. functional/
  3. scenario/