doc_fragments: Clean up parameter types (storage) (#52179)

* module_utils: Clean up parameter types (storage)

This PR includes:

- Parameter types added
- Copyright format fixes
- Short license statement
- Description fixes (only for a few files, then I stopped :-))

* Fix quotes

* Fix rST issue

lib/ansible/plugins/doc_fragments/ibm_storage.py

@@ -1,5 +1,6 @@
-#
-# Copyright (C) 2018 IBM CORPORATION
+# -*- coding: utf-8 -*-
+
+# Copyright: (c) 2018, IBM CORPORATION
 # Author(s): Tzur Eliyahu <tzure@il.ibm.com>
 # GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 
@@ -10,24 +11,27 @@ __metaclass__ = type
 class ModuleDocFragment(object):
 
     # ibm_storage documentation fragment
-    DOCUMENTATION = '''
+    DOCUMENTATION = r'''
 options:
     username:
         description:
             - Management user on the spectrum accelerate storage system.
+        type: str
         required: True
     password:
         description:
             - Password for username on the spectrum accelerate storage system.
+        type: str
         required: True
     endpoints:
         description:
             - The hostname or management IP of Spectrum Accelerate storage system.
+        type: str
         required: True
 notes:
   - This module requires pyxcli python library.
     Use 'pip install pyxcli' in order to get pyxcli.
 requirements:
-  - "python >= 2.7"
+  - python >= 2.7
   - pyxcli
 '''