Add back warning and support for repeated calls to setup_transport_connector with the same transport name for vumi-wikipedia.
Add back warning and support for repeated calls to setup_transport_connector with the same transport name for vumi-wikipedia.

harrissoerja/vumi,TouK/vumi,harrissoerja/vumi,vishwaprakashmishra/xmatrix,harrissoerja/vumi,vishwaprakashmishra/xmatrix,vishwaprakashmishra/xmatrix,TouK/vumi,TouK/vumi