CBQE-0: extract_remote_info one time per connection

Change-Id: I6f083f590dc080f92940b71146463b84345d9348
Reviewed-on: http://review.couchbase.org/28061
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
Tested-by: Andrei Baranouski <andrei.baranouski@gmail.com>