Job Config Argument for DCP Compute API

[ccmcintyre-kingsds]

Allow user to pass in a dict of (valid) job properties to dcp.compute_for as an argument, alongside the input set, work function, args and kwargs.

This facilitates single-line DCP workloads that still allow the user to specify custom configurations, such as compute group details, job name, necessary packages, etc., and eliminates the requirement of defining an explicit job handle.