Splitting classes from common.py

Moving uncommon classes from common.py to multipart_reply.py and multipart_request.py
Fixing lint warnings

Author: macartur

docs/conf.py

@@ -12,8 +12,9 @@
 # All configuration values have a default; values that are commented out
 # serve to show the default.
 
-import sys
 import os
+import sys
+
 import sphinx_bootstrap_theme
 
 # If extensions (or modules to document with autodoc) are in another directory,

pyof/v0x04/common/action.py

@@ -12,7 +12,7 @@
 __all__ = ('ActionExperimenterHeader', 'ActionGroup', 'ActionHeader',
            'ActionMPLSTTL', 'ActionNWTTL', 'ActionOutput', 'ActionPopMPLS',
            'ActionPush', 'ActionSetField', 'ActionSetQueue', 'ActionType',
-           'ControllerMaxLen')
+           'ControllerMaxLen', 'ListOfActions')
 
 # Enums