Clean debug-py35 up from tox.ini
Clean debug-py35 up from tox.ini

in the setup.cfg, there require python >= 3.6[1], so the debug-py35 should be removed

and in 'victoria' cycle , we should test py38 by default

Change-Id: Ie6ff51962da96c518c848a8213c3f4d3a44a80e3

openstack/kuryr,openstack/kuryr