CCBC-372/CCBC-367: Fix missing host for management requests

Change-Id: Ib13451cac473d0413d2214f33b8bd66e825dac3f
Reviewed-on: http://review.couchbase.org/36400
Reviewed-by: Brett Lawson <brett19@gmail.com>
Tested-by: Mark Nunberg <mnunberg@haskalah.org>