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_bfd_view.py

@@ -34,70 +34,53 @@ options:
             - Specifies the name of a BFD session.
               The value is a string of 1 to 15 case-sensitive characters without spaces.
         required: true
-        default: null
     local_discr:
         description:
             - Specifies the local discriminator of a BFD session.
               The value is an integer that ranges from 1 to 16384.
-        required: false
-        default: null
     remote_discr:
         description:
             - Specifies the remote discriminator of a BFD session.
               The value is an integer that ranges from 1 to 4294967295.
-        required: false
-        default: null
     min_tx_interval:
         description:
             - Specifies the minimum interval for receiving BFD packets.
               The value is an integer that ranges from 50 to 1000, in milliseconds.
-        required: false
-        default: null
     min_rx_interval:
         description:
             - Specifies the minimum interval for sending BFD packets.
               The value is an integer that ranges from 50 to 1000, in milliseconds.
-        required: false
-        default: null
     detect_multi:
         description:
             - Specifies the local detection multiplier of a BFD session.
               The value is an integer that ranges from 3 to 50.
-        required: false
-        default: null
     wtr_interval:
         description:
             - Specifies the WTR time of a BFD session.
               The value is an integer that ranges from 1 to 60, in minutes.
               The default value is 0.
-        required: false
-        default: null
     tos_exp:
         description:
             - Specifies a priority for BFD control packets.
               The value is an integer ranging from 0 to 7.
               The default value is 7, which is the highest priority.
-        required: false
-        default: null
     admin_down:
         description:
             - Enables the BFD session to enter the AdminDown state.
               By default, a BFD session is enabled.
               The default value is bool type.
-        required: false
-        default: false
+        type: bool
+        default: 'no'
     description:
         description:
             - Specifies the description of a BFD session.
               The value is a string of 1 to 51 case-sensitive characters with spaces.
-        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']
+extends_documentation_fragment: ce
 """
 
 EXAMPLES = '''