Prepare dp3 release.

Change-Id: I8ba16abe5ada20c54d577b60bab4532776e4d7e0
Reviewed-on: http://review.couchbase.org/40569
Reviewed-by: Michael Nitschinger <michael.nitschinger@couchbase.com>
Tested-by: Michael Nitschinger <michael.nitschinger@couchbase.com>