* Replace .testr.conf by .stestr.conf for migration and update
.gitignore and test-requirements.txt file accordingly
* Use py3 as the default runtime for tox
* Add a new job, openstack-cover-jobs, to run the coverage in Zuul
Signed-off-by: HeroicHitesh <email.hiteshkumar@gmail.com>
Change-Id: I72eebd8adfa2086b7d3a11eedbfe2e69cfd65bcc