Add current job ID and current cluster name to banyanconfig.toml

[calebwin]

Currently we have a set of configuration parameters which are stored in banyanconfig.toml, environment variables, or parameters to the configure function.

• Make configure also store and maintain cluster name and job ID
• Migrate all functions from using cluster_name/name as a parameter to simply calling configure
• Migrate all functions from using current_job_id to simply calling configure

This will improve the consistency across the API and make it super easy for a user to understand and specify what Banyan account, AWS account, cluster, and job are being used at any point.

[cailinw]

Won't this make it hard to run multiple jobs at the same time? e.g., running multiple jobs from different processes

[calebwin]

Good point, I hadn't thought about that. I think we should still do this but the only change should be that we should cache all configuration parameters in memory. So for each configuration parameter, we should have a global variable to cache that parameters.