Enable checks for E711, E712 and E713

* E711 comparison to None should be 'if cond is None:'
* E712 comparison to True should be 'if cond is True:' or 'if cond:'
* E713 test for membership should be 'not in'

Change-Id: I1481209a85fa6db0343d0111e2b19d9fab4538a7

tox.ini

@@ -72,7 +72,7 @@ commands = {posargs}
 # F841,H302,H305,H307,H405
 
 
-ignore = E251,E265,E711,E712,E713,F402,F841,H104,H302,H305,H307,H402,H405,H803,H904
+ignore = E251,E265,F402,F841,H104,H302,H305,H307,H402,H405,H803,H904
 builtins = _
 exclude = .git,.venv,.tox,dist,tools,doc,common,*egg,build