VRRP priority control event policy commands

config
    - vrrp
        - [no] policy policy-id [context service-id]
            - delta-in-use-limit limit
            - no delta-in-use-limit
            - description description string
            - no description
            - [no] priority-event
                - [no] host-unreachable	 ip-address
                    - drop-count consecutive-failures
                    - no drop-count
                    - hold-clear seconds
                    - no hold-clear
                    - hold-set seconds
                    - no hold-set
                    - interval seconds
                    - no interval
                    - priority priority-level [{delta | explicit}]
                    - no priority
                    - timeout seconds
                    - no timeout
                - [no] lag-port-down lag-id
                    - hold-clear seconds
                    - no hold-clear
                    - hold-set seconds
                    - no hold-set
                    - [no] number-down number-of-lag-ports-down
                        - priority priority-level [delta | explicit]
                        - no priority
                - [no] port-down port-id 
                    - hold-clear seconds
                    - no hold-clear
                    - hold-set seconds
                    - no hold-set
                    - priority priority-level [delta | explicit]
                    - no priority
                - [no] route-unknown ip-prefix/mask
                    - hold-clear seconds
                    - no hold-clear
                    - hold-set seconds
                    - no hold-set
                    - less-specific [allow-default]
                    - no less-specific
                    - [no] next-hop ip-address
                    - priority priority-level [delta | explicit]
                    - no priority
                    - protocol protocol
                    - no protocol[protocol]
                    - [no] protocol ospf 
                    - [no] protocol isis
                    - [no] protocol static