Add Feature for Subprocess based Job Execution

[ar-siddiqui]

Features

• subprocess type processes now can be executed through API. They must be registered like other processes and will be called using OS subprocess calls.

API

GET /jobs/:jobID/logs

• In response body container_logs key is replaced by process_logs

PUT|POST /processes/:processID

• Request payload schema has changed (See Process YAML Schema changes below)

Process YAML Schema

• command is now a first class object and moved outside of container
• config object is added
• maxResources and envVars are moved under config object
• image moved under host
• container object removed
• host.type valid options are changed from local | aws-batch to docker | aws-batch | subprocess

Documentation

• A CHANGELOG.md file is added in the repo.
• Process templates are provided for all three host types in ./process_templates folder
• Windows setup instructions are added in README.md