
With the move to the Victoria job template in https://review.opendev.org/#/c/722681/, the py37 jobs no longer get run, so the check and gate job entries can be removed. Added a keepalived py38 KillFilter line to match the py36 and py37 ones. Also updated TESTING.rst to use py38 in all examples. Change-Id: Ief793b54d53c3239cfb24278e88e4f4189bbc2c2