Miscellaneous pylint fixes.

The following rules are no longer disabled:

- bad-format-string
- duplicate-key
- lost-exception
- trailing-newlines
- unexpected-keyword-arg
- useless-suppression
- using-constant-test

bin/ansible

@@ -46,7 +46,7 @@ from ansible.module_utils._text import to_text
 ########################################
 # OUTPUT OF LAST RESORT
 class LastResort(object):
-    def display(self, msg):
+    def display(self, msg, log_only=None):
         print(msg, file=sys.stderr)
 
     def error(self, msg, wrap_text=None):