use specific hacking rules

Change-Id: I91cb5e30ec081262e2a590d64ba46fddadc7590f

tox.ini

@@ -39,8 +39,13 @@ commands =
 commands = {posargs}
 
 [flake8]
-# TODO(dmllr): Review some of the hacking warnings and fix if applicable
-# H233 Use print function, not print operator
-ignore = H203,H233,H301,H302,H306,H402,H404,H703,H201
+# it's not a bug that we aren't using all of hacking
+# H102 -> apache2 license exists
+# H103 -> license is apache
+# H201 -> no bare excepts
+# H501 -> don't use locals() for str formatting
+# H903 -> \n not \r\n
+ignore = H
+select = H102, H103, H201, H501, H903
 exclude = .venv,.tox,dist,doc,*egg
 show-source = True