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/network/cloudengine/ce_mlag_config.py

@@ -33,55 +33,37 @@ options:
     dfs_group_id:
         description:
             - ID of a DFS group. The value is 1.
-        required: false
         default: present
     nickname:
         description:
             - The nickname bound to a DFS group. The value is an integer that ranges from 1 to 65471.
-        required: false
-        default: null
     pseudo_nickname:
         description:
             - A pseudo nickname of a DFS group. The value is an integer that ranges from 1 to 65471.
-        required: false
-        default: null
     pseudo_priority:
         description:
             - The priority of a pseudo nickname. The value is an integer that ranges from 128 to 255.
               The default value is 192. A larger value indicates a higher priority.
-        required: false
-        default: null
     ip_address:
         description:
             - IP address bound to the DFS group. The value is in dotted decimal notation.
-        required: false
-        default: null
     vpn_instance_name:
         description:
             - Name of the VPN instance bound to the DFS group. The value is a string of 1 to 31 case-sensitive
               characters without spaces. If the character string is quoted by double quotation marks, the character
               string can contain spaces. The value _public_ is reserved and cannot be used as the VPN instance name.
-        required: false
-        default: null
     priority_id:
         description:
             - Priority of a DFS group. The value is an integer that ranges from 1 to 254. The default value is 100.
-        required: false
-        default: null
     eth_trunk_id:
         description:
             - Name of the peer-link interface. The value is in the range from 0 to 511.
-        required: false
-        default: null
     peer_link_id:
         description:
             - Number of the peer-link interface. The value is 1.
-        required: false
-        default: null
     state:
         description:
             - Specify desired state of the resource.
-        required: false
         default: present
         choices: ['present','absent']
 '''