Based on the supported distros at the start of the cycle, unit tests
will need to run on the following Python runtimes:
* Python 3.6 (default in CentOS 8.0 and openSUSE Leap 15.2)
* Python 3.8 (default in Ubuntu 20.04 Focal)
Change-Id: I94c777d456db04184afc8825c83abdca6093c1a7
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>