Use disco_root to find the location of the disco:// files.
Add yet another option to jobpack.

These options will be cleaned up shortly.
Use the task to populate the settings in a worker.
Correct the http address created from the disco uri.
avoid setting the port number as a command line.

The port number is available in the disco setting file.
Get the results from the replica instead of the master.

On the clusters with larger than one machine, we have to get the results from
the correct node.  Sending such a request to master is wrong.
Move paths to be more Go-idiomatic

Update imports to match folder structure

Fix Travis