doc_fragments: Clean up parameter types (network) (#52176)

* module_utils: Clean up parameter types

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

* More network stuff

* Fix typo

* Fix PEP8

* Fix booleans

* Fix typo

lib/ansible/plugins/doc_fragments/panos.py

@@ -2,24 +2,26 @@
 
 # Copyright: (c) 2016, techbizdev <techbizdev@paloaltonetworks.com>
 # Copyright: (c) 2018, Kevin Breit (@kbreit)
-
 # GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 
 
 class ModuleDocFragment(object):
     # Standard files documentation fragment
-    DOCUMENTATION = '''
+    DOCUMENTATION = r'''
 options:
     ip_address:
         description:
             - IP address (or hostname) of PAN-OS device.
+        type: str
         required: true
     password:
         description:
             - Password for authentication.
+        type: str
         required: true
     username:
         description:
             - Username for authentication.
-        default: "admin"
+        type: str
+        default: admin
 '''