Add mix bonny.init task

[coryodaniel]

Add a task to initializing a new bonny operator.

• [ ] add config/test.exs w/ HTTP and Discovery stubs
• [ ] add example discovery mocks
• [ ] add config/prod.exs defaulted to SA
• [ ] add config/dev.exs default to docker-for-desktop?
• [ ] either a Makefile for building docker images or a task?
• [ ] bonny/operator logger, see eviction operator
• [ ] test_helper.exs
  • K8s.Client.DynamicHTTPProvider.start_link([])

[coryodaniel]

https://github.com/coryodaniel/bonny/issues/17