RDS: Reconnect stalls for 15s

RDS: Reconnect stalls for 15s

On Switch reboot, both end nodes would try to reconnect at the same time.
This can cause a race b/w the gratuitous ARP and the IP resolution,
resulting in a path to a down port. The CONNECT request sent on this path
is stuck until the 15s timeout at which time the connection is dropped
and re-established.

The fix was to indroduce a reconnect delay b/w the ARP and the reconnect
to minimize the race and avoid the 15s timeout.

Orabug: 17277974

Signed-off-by: Richard Frank <richard.frank@oracle.com>
(cherry picked from commit 72faa77d3d695cbbdddc9d99be6abdfce1187bc6)