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_interface_ospf.py

@@ -48,56 +48,41 @@ options:
         description:
             - The cost associated with this interface.
               Valid values are an integer in the range from 1 to 65535.
-        required: false
-        default: null
     hello_interval:
         description:
             - Time between sending successive hello packets.
               Valid values are an integer in the range from 1 to 65535.
-        required: false
-        default: null
     dead_interval:
         description:
             - Time interval an ospf neighbor waits for a hello
               packet before tearing down adjacencies. Valid values are an
               integer in the range from 1 to 235926000.
-        required: false
-        default: null
     silent_interface:
         description:
             - Setting to true will prevent this interface from receiving
               HELLO packets. Valid values are 'true' and 'false'.
-        required: false
-        default: false
+        type: bool
+        default: 'no'
     auth_mode:
         description:
             - Specifies the authentication type.
-        required: false
         choices: ['none', 'null', 'hmac-sha256', 'md5', 'hmac-md5', 'simple']
-        default: null
     auth_text_simple:
         description:
             - Specifies a password for simple authentication.
               The value is a string of 1 to 8 characters.
-        required: false
-        default: null
     auth_key_id:
         description:
             - Authentication key id when C(auth_mode) is 'hmac-sha256', 'md5' or 'hmac-md5.
               Valid value is an integer is in the range from 1 to 255.
-        required: false
-        default: null
     auth_text_md5:
         description:
             - Specifies a password for MD5, HMAC-MD5, or HMAC-SHA256 authentication.
               The value is a string of 1 to 255 case-sensitive characters, spaces not supported.
-        required: false
-        default: null
     state:
         description:
             - Determines whether the config should be present or not
               on the device.
-        required: false
         default: present
         choices: ['present','absent']
 """