[acm, distrib]: Add reconnect_max_count and reconnect_timeout configuration parameters

reconnect_max_count specifies max. number of reconnections to the
upstream node. If the number is reached, the node rejoins to
distribution tree and asks for a new parent.
reconnect_max_count < 0, reconnection is disabled.
reconnect_max_count = 0, rejoin without reconnection.
Default value is 10.

reconnect_timeout specifies timeout (in sec.) between reconnections.
reconnect_timeout < 0, reconnection is disabled.
Default value is 10.

Signed-off-by: Sasha Kotchubievsky <sashakot@mellanox.com>
Signed-off-by: Hal Rosenstock <hal@mellanox.com>