JobSub

Some examples of unhelpful error messages:

If you use the client to submit file://my_job.sh and my_job.sh doesn't exist you get this error:

PyCurl Error 26: failed creating formpost data
JobSub remote submission failed.

If you forget the port number on the --jobsub-server option for any of the commands you get this error:
'Peer certificate cannot be authenticated with known CA certificates'

If you misspell the accounting group e.g. micorboone you get this error from the clients:
Server response code: 200
Response ERROR:
User authorization has failed

Consider this an umbrella/parent ticket for the above 3 unhelpful error messages. The integration test suite should iterate through as many options as possible to find more unhelpful errors.