The value of vRtrLdpHelloAdjBfdStatus indicates the BFD operational
status for LDP hello adjacency.
If the value of vRtrLdpHelloAdjBfdStatus is 'noService', BFD is
not enabled for LDP hello adjacency. If the value of the object is
'outOfService', BFD is enabled but it is down and not running.
If the value of object is 'inService', BFD is enabled and it is
running.