CBD-1359:  copy 2.5.1 manifests and add as 2.5.2

Change-Id: Iee188a2bb775c872698b4b4fcb22565fe7d34977
Reviewed-on: http://review.couchbase.org/36103
Reviewed-by: Eric Limare <eric.limare@couchbase.com>
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>