Add new consul modules and reuse code between them. (#7878)

Refactored consul modules and added new roles.

plugins/doc_fragments/consul.py

@@ -5,6 +5,7 @@
 
 
 from __future__ import absolute_import, division, print_function
+
 __metaclass__ = type
 
 
@@ -33,12 +34,16 @@ options:
     description:
       - Whether to verify the TLS certificate of the consul agent.
     default: true
-  token:
-    description:
-      - The token to use for authorization.
-    type: str
   ca_path:
     description:
       - The CA bundle to use for https connections
     type: str
 """
+
+    TOKEN = r"""
+options:
+  token:
+    description:
+      - The token to use for authorization.
+    type: str
+"""