NCBC-668: 'HOST' causes parsing error on Memcached buckets - part 2

Change-Id: Ia57b04e2b2208b9e19121b0a4137920fbfefa68f
Reviewed-on: http://review.couchbase.org/41897
Tested-by: Jeffry Morris <jeffrymorris@gmail.com>
Reviewed-by: Matt Ingenthron <matt@couchbase.com>