Set this object to true if the route-refresh capability should be
advertised to this peer. Even if this object is set to true, BGP may
decide not to advertise the route-refresh capability to this peer (for
example when it is detected that the peer does not support capability
negotiation or when it is detected that the peer does not support the
route-refresh capability and incorrectly sends an unsupported capability
notification). The juniBgpPeerSentCapabilityRouteRefresh can be used to
determine whether or not the capability was actually advertised to the
peer.