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/ovs/openvswitch_bridge.py

@@ -30,46 +30,34 @@ options:
             - Name of bridge or fake bridge to manage
     parent:
         version_added: "2.3"
-        required: false
-        default: None
         description:
             - Bridge parent of the fake bridge to manage
     vlan:
         version_added: "2.3"
-        required: false
-        default: None
         description:
             - The VLAN id of the fake bridge to manage (must be between 0 and
               4095). This parameter is required if I(parent) parameter is set.
     state:
-        required: false
         default: "present"
         choices: [ present, absent ]
         description:
             - Whether the bridge should exist
     timeout:
-        required: false
         default: 5
         description:
             - How long to wait for ovs-vswitchd to respond
     external_ids:
         version_added: 2.0
-        required: false
-        default: None
         description:
             - A dictionary of external-ids. Omitting this parameter is a No-op.
               To  clear all external-ids pass an empty value.
     fail_mode:
         version_added: 2.0
-        default: None
-        required: false
         choices : [secure, standalone]
         description:
             - Set bridge fail-mode. The default value (None) is a No-op.
     set:
         version_added: 2.3
-        required: false
-        default: None
         description:
             - Run set command after bridge configuration. This parameter is
               non-idempotent, play will always return I(changed) state if

lib/ansible/modules/network/ovs/openvswitch_port.py

@@ -34,31 +34,25 @@ options:
             - Name of port to manage on the bridge
     tag:
         version_added: 2.2
-        required: false
         description:
             - VLAN tag for this port. Must be a value between
               0 and 4095.
     state:
-        required: false
         default: "present"
         choices: [ present, absent ]
         description:
             - Whether the port should exist
     timeout:
-        required: false
         default: 5
         description:
             - How long to wait for ovs-vswitchd to respond
     external_ids:
         version_added: 2.0
-        required: false
         default: {}
         description:
             - Dictionary of external_ids applied to a port.
     set:
         version_added: 2.0
-        required: false
-        default: None
         description:
             - Set a single property on a port.
 '''