CBQE-0: fix config for cbrecover_multiple_failover_addback_routine

Change-Id: Ic89c3c60119fa5ba9d3685d51ccf5bba949cdd9b
Reviewed-on: http://review.couchbase.org/33790
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
Tested-by: Andrei Baranouski <andrei.baranouski@gmail.com>