In Zed cycle testing runtime, we are targetting to drop the
python 3.6/3.7 support, project started adding python 3.8 as minimum,
example nova:
- 56b5aed08c/setup.cfg (L13)
Also moving zuul jobs to `openstack-python3-jobs`.
Change-Id: If02b0159a9a48971a26b503134f5ad5b3b86272f
python35 is pretty old and often not available by default on some
operating systems, so we need to be testing python36.
Change-Id: I61a7b7f29add38f2164d9c6907af2a3f31105612
Official projects are doing this as part of enabling python3
first, but it matters more here as a way to manage with local
control.
Change-Id: Ia93cd1a45519f5fe2ddd32a89f896f896f21491f