Move to parent parser to avoid separated command line arguments

[tvogels01]

Summary

Current:

arthur.py --submit $CLUSTER_ID extract --prolix

Desired:

arthur.py extract --submit $CLUSTER_ID --prolix

Brownie points when --submit automatically turns on "prolix" mode and (maybe?) sets the "prefix".

Details

This is most apparent when submitting jobs to the cluster where "help" may not do what a user might reasonably expect:

arthur.py --submit $CLUSTER_ID extract --help

Now you have to find the help in the output of the command on the cluster.

This would be clear (and print the help message for extract in terminal):

arthur.py extract --submit $CLUSTER_ID --help

Having the --submit and --config args after the verb would also make command line expansion easier.

It gets trickier when considering "dry-run":

arthur.py  extract --submit $CLUSTER_ID --dry-run

For now, this should indeed submit "extract --dry-run". Consider the workflow:

arthur.py  upgrade --from dw.user --dry-run
arthur.py  upgrade --from --submit $CLUSTER_ID

(Which is almost great .. but might need --submit to imply --prolix and --prefix {whatever prefix is configured})