The restart-time advertised in graceful-restart capabilities sent to
all peers. This is the estimated time (in seconds) it will take for
the BGP session to be re-established after a restart. This can be used
to speed up routing convergence by the peer in case that this BGP
speaker does not come back after a restart. This value is used by
all peers unless overridden by juniBgpPeerGroupGracefulRestartRestartTime
or juniBgpPeerGracefulRestartRestartTime.