According to Openstack summit session [1],
stestr is maintained project to which all Openstack projects should migrate.
So we should switch to stestr.
[1] https://etherpad.openstack.org/p/YVR-python-pti
Change-Id: I14ae3879465e622f36fd7bba3f04cb6e0cb7500e
Test cases running depends on `discover' package, but in python 2.6,
`discover' package is not there. So need to add `discover' in
test-requirements.txt.
Change-Id: I1129bc50c97861c9fca3894261ea1b831cd3f6cc
Fixes: bug #1193349
Made sure that `run_tests.sh` works properly (it was failing on the heat/bin
directory) and that all tests pass and the generated logs are .gitignored.
Signed-off-by: Tomas Sedovic <tomas@sedovic.cz>