[module_base] Add _run_post()

Author: opoplawski

plugins/module_utils/module_base.py

@@ -446,6 +446,10 @@ def _update(self):
         else:
             return ('', '', '')
 
+    def _run_post(self):
+        """ used to do some post-processing like adding results or decoding diff entries """
+        pass
+
     # We take params here for use with pfsense_aggregate and the test framework
     def run(self, params):
         """ process input params to add/update/delete """
@@ -464,6 +468,8 @@ def run(self, params):
         else:
             self._add()
 
+        self._run_post()
+
     ##############################
     # Logging
     #