Enable PEP8 checks for E211, E222, E225, E228

* E211 whitespace before '('
* E222 multiple spaces after operator
* E225 missing whitespace around operator
* E228 missing whitespace around modulo operator

Change-Id: I19f51d646bbb9a8854555419a4139c059207ea60

packstack/installer/setup_controller.py

@@ -15,11 +15,11 @@ def steps_new_format(steplist):
 
 class Controller(object):
 
-    __GROUPS=[]
-    __SEQUENCES=[]
-    __PLUGINS=[]
-    MESSAGES=[]
-    CONF={}
+    __GROUPS = []
+    __SEQUENCES = []
+    __PLUGINS = []
+    MESSAGES = []
+    CONF = {}
 
     __single = None # the one, true Singleton ... for god's sake why ??? :)