Timo Teräs authored and Donald Sharp committed 5a2a1ec18c8
bgpd: update rtt on soft clear
rtt is calculated dynamically by the kernel. Refresh it on
soft clear.
Fixes: ef757700d0 "bgpd: allow using rtt in route-map's set metric"
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
