Decide on parallelization and rateLimiting parameters for actual deployment

[ldgriswold]

Modify values.yaml to include the following fields under controller:

  # -- parallelism dictates how many workflows can be running at the same time  
  parallelism:
  # -- Globally limits the rate at which pods are created.
  # This is intended to mitigate flooding of the Kubernetes API server by workflows with a large amount of
  # parallel nodes.
  resourceRateLimit: {}
    # limit: 10
    # burst: 1

[ldgriswold]

Closed by #79