Successfully submit a PDM message to the ODE to be sent to RSU.

1. Open Postman or other RESTful service to send requests to the url for PDM messages(:8080/pdm)
2. Use correct RSU credentials and create a valid JSON object based off of the Template found in the folder:
   jpo-ode/data/PDM_Message_Testing_Files
3. Copy and paste the JSON object from previous step in body of the Postman's HTTP request and send the request.
4. Check Postman's response body to verify the response.
5. Use snmpget <oid> to confirm that the message successfully arrived on the RSU.