Add ptrace and couchbase-hadoop-pluin projects

Change-Id: I96b1e094ec70c04421e3186e63a4323ef7056d13
Reviewed-on: http://review.couchbase.org/41788
Reviewed-by: Chris Hillery <ceej@couchbase.com>
Tested-by: Chris Hillery <ceej@couchbase.com>