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_static_route.py

@@ -48,42 +48,27 @@ options:
     next_hop:
         description:
             - Next hop address of static route.
-        required: false
-        default: null
     nhp_interface:
         description:
             - Next hop interface full name of static route.
-        required: false
-        default: null
     vrf:
         description:
             - VPN instance of destination ip address.
-        required: false
-        default: null
     destvrf:
         description:
             - VPN instance of next hop ip address.
-        required: false
-        default: null
     tag:
         description:
             - Route tag value (numeric).
-        required: false
-        default: null
     description:
         description:
             - Name of the route. Used with the name parameter on the CLI.
-        required: false
-        default: null
     pref:
         description:
             - Preference or administrative difference of route (range 1-255).
-        required: false
-        default: null
     state:
         description:
             - Specify desired state of the resource.
-        required: false
         choices: ['present','absent']
         default: present
 '''