CBLT-319:  use new package names for staging, release, undo

Change-Id: I9682ec8c8ab750ff218dda050c4da2109a7cb661
Reviewed-on: http://review.couchbase.org/38617
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>