Turns out that without jobs defined patches don't really do much of
anything when submitted. Add some jobs.
Also, since this is a new utility that is not in use yet, and the first
use of it is on a bionic node anyway, just support python3.6.
Change-Id: I46ab534768a35329a6b9325c43ebc048ebfb368c
We want to default to running all tox environments under python 3, so
set the basepython value in each environment.
We do not want to specify a minor version number, because we do not
want to have to update the file every time we upgrade python.
We do not want to set the override once in testenv, because that
breaks the more specific versions used in default environments like
py35 and py36.
Change-Id: Ib42c05e53cf7faa4a96c7ff7bdd453ae8ae2d984
Andreas Jaeger