MB-11230: should be able to set --recovery-type=delta even for failovered node

see MB-11230 for details

Change-Id: Ia09993ad177d1e818b86cf9514a44c3fe041bd3e
Reviewed-on: http://review.couchbase.org/38064
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
Tested-by: buildbot <build@couchbase.com>