Clean up module documentation (#36909)

* Clean up module documentation

This PR includes:
- Removal of `default: None` (and variations)
- Removal of `required: false`
- Fixing booleans and `type: bool` where required

* Fix remaining (new) validation issues

lib/ansible/modules/cloud/cloudstack/cs_pod.py

@@ -39,41 +39,28 @@ options:
   id:
     description:
       - uuid of the existing pod.
-    default: null
-    required: false
   start_ip:
     description:
       - Starting IP address for the Pod.
       - Required on C(state=present)
-    default: null
-    required: false
   end_ip:
     description:
       - Ending IP address for the Pod.
-    default: null
-    required: false
   netmask:
     description:
       - Netmask for the Pod.
       - Required on C(state=present)
-    default: null
-    required: false
   gateway:
     description:
       - Gateway for the Pod.
       - Required on C(state=present)
-    default: null
-    required: false
   zone:
     description:
       - Name of the zone in which the pod belongs to.
       - If not set, default zone is used.
-    required: false
-    default: null
   state:
     description:
       - State of the pod.
-    required: false
     default: 'present'
     choices: [ 'present', 'enabled', 'disabled', 'absent' ]
 extends_documentation_fragment: cloudstack