add step to prepare downstream collection (#154)

* add step to prepare downstream collection

* fix header generation

* update downstream_fragments.py

plugins/modules/openshift_adm_groups_sync.py

@@ -7,6 +7,7 @@ from __future__ import absolute_import, division, print_function
 
 __metaclass__ = type
 
+# STARTREMOVE (downstream)
 DOCUMENTATION = r"""
 
 module: openshift_adm_groups_sync
@@ -186,6 +187,7 @@ builds:
     }
   ]
 """
+# ENDREMOVE (downstream)
 
 import copy
 import traceback