Fix non-matching defaults in docs (#5446)

* Allow to pass options as lookup options.

* Adjust tests.

* Fix non-matching defaults.

plugins/modules/web_infrastructure/sophos_utm/utm_proxy_location.py

@@ -48,6 +48,7 @@ options:
         type: str
         description:
           - The reference name of the auth profile
+        default: ''
     backend:
         type: list
         elements: str
@@ -58,10 +59,12 @@ options:
         type: str
         description:
           - The path of the backend
+        default: ''
     comment:
         type: str
         description:
           - The optional comment string
+        default: ''
     denied_networks:
         type: list
         elements: str