According to Openstack summit session [1],
stestr is maintained project to which all Openstack projects should migrate.
Let's switch to stestr as other projects have already moved to it.
[1] https://etherpad.openstack.org/p/YVR-python-pti
Change-Id: I8f70f7d8a3d18301559c0eb47e6a64c8b5100d39
The os-testr 1.0.0 release had a couple of required config changes due
to it's internal usage of stestr. This commit fixes those by adding a
.stestr.conf (to remove a warning) sets the fixture env variables in
the tox.ini instead of being hidden in .testr.conf and removing the
quotes around posargs to make passing args to ostestr actually work.
Also to keep the expected dev experience stestr is used directly for
places where ostestr was called directly.
Change-Id: I785b0dc1720328b119f0978aa573ad0b89e54c75
Closes-Bug: #1731155