This is a mechanically generated patch to ensure unit testing is in place
for all of the Tested Runtimes for Train.
See the Train python3-updates goal document for details:
https://governance.openstack.org/tc/goals/train/python3-updates.html
Note that python35-charm-jobs is retained since this charm is supported
on Xenial.
Change-Id: Ibc2def246bf2a96213b0e1429e4d97a5eb0f4406
Story: #2005924
Task: #34228
This technique was borrowed from the tox "cover" environment in
openstack/nova's tox.ini. This leverages the fact that stestr lets
you override the python executable via the PYTHON environment
variable. Doing this allows us to easily generate coverage for our
unit tests.
An important caveat is that this does not provide any coverage for
tests via zaza, amulet, etc. It is purely focused on the unit tests.
Note that this replaces the previous .coveragerc; coverage
configuration is instead pulled from tox.ini.
Change-Id: I78170741219749d8bfb5eb7eb247877814fb9824