CBQE-1409: updateworker pointer to lbc-python repo

Change-Id: Ib8a8e92402b31929c340063f77d5582c981bd046
Reviewed-on: http://review.couchbase.org/28358
Reviewed-by: Tommie McAfee <tommie@couchbase.com>
Tested-by: Tommie McAfee <tommie@couchbase.com>