Fixup printing of localhost for IPv6
Fixup printing of localhost for IPv6

Change-Id: I6607019b1e1494c919f9d3da6762c8f0061d1634
Reviewed-on: http://review.couchbase.org/77819
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Jim Walker <1cd02e31b43620d7c664e038ca42a060d61727b9@couchbase.com>

daverigby/kv_engine,couchbase/memcached,couchbase/memcached,couchbase/memcached,couchbase/memcached,daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine