MB-8893: Add UPR entry points

Change-Id: Ib9edfc7cd61d666479f4c488c961c1e57138fc70
Reviewed-on: http://review.couchbase.org/29612
Reviewed-by: Michael Wiederhold <mike@couchbase.com>
Tested-by: Michael Wiederhold <mike@couchbase.com>