Add test for auto inflate

Change-Id: Ief495417f17c3a3e2cd8a0ff83146c692c88b2ca
Reviewed-on: http://review.couchbase.org/31814
Reviewed-by: Trond Norbye <trond.norbye@gmail.com>
Tested-by: Trond Norbye <trond.norbye@gmail.com>