Allow rudimentary raw memcached connections to SSL memcached

This allows to specify ssl=no_verify in the connection string and use a
standalone, ssl-enabled memcached for test

Change-Id: I3fbf583533aa076f493f99d80e94233e31e40da8
Reviewed-on: http://review.couchbase.org/40307
Tested-by: Mark Nunberg <mnunberg@haskalah.org>
Reviewed-by: Brett Lawson <brett19@gmail.com>