MB-100 add more waiting time in
auto failover due to windows needs more time to kickin

Change-Id: Ibc16aeca6afe66b926edf66bc9b59fb0eac13102
Reviewed-on: http://review.couchbase.org/31809
Reviewed-by: Thuan Nguyen <soccon@gmail.com>
Tested-by: Thuan Nguyen <soccon@gmail.com>