Add scripts to couchdb and ep-engine

Change-Id: Ifea403fe35e199c24f6244a41b7af6d3aa1d575a
Reviewed-on: http://review.couchbase.org/32745
Reviewed-by: Eric Limare <eric.limare@couchbase.com>
Tested-by: Eric Limare <eric.limare@couchbase.com>