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/centurylink/clc_modify_server.py

@@ -26,49 +26,35 @@ options:
   cpu:
     description:
       - How many CPUs to update on the server
-    required: False
-    default: None
   memory:
     description:
       - Memory (in GB) to set to the server.
-    required: False
-    default: None
   anti_affinity_policy_id:
     description:
       - The anti affinity policy id to be set for a hyper scale server.
         This is mutually exclusive with 'anti_affinity_policy_name'
-    required: False
-    default: None
   anti_affinity_policy_name:
     description:
       - The anti affinity policy name to be set for a hyper scale server.
         This is mutually exclusive with 'anti_affinity_policy_id'
-    required: False
-    default: None
   alert_policy_id:
     description:
       - The alert policy id to be associated to the server.
         This is mutually exclusive with 'alert_policy_name'
-    required: False
-    default: None
   alert_policy_name:
     description:
       - The alert policy name to be associated to the server.
         This is mutually exclusive with 'alert_policy_id'
-    required: False
-    default: None
   state:
     description:
       - The state to insure that the provided resources are in.
     default: 'present'
-    required: False
     choices: ['present', 'absent']
   wait:
     description:
       - Whether to wait for the provisioning tasks to finish before returning.
-    default: True
-    required: False
-    choices: [ True, False]
+    type: bool
+    default: 'yes'
 requirements:
     - python = 2.7
     - requests >= 2.5.0