Author and user configuration

[coryodaniel]

This will probably be more of an epic. This is a stream of conciousness

• All operator-user configuration should be accessible via environment variables
  • BONNY_POD_NAMESPACE
  • BONNY_POD_SERVICE_ACCOUNT
  • Bonny.Config.labels
  • Bonny.Config.cluster_name
• Devise a consistent naming pattern for configuration to separate operator author from operator user. eg group name is an author config, pod namespace is a user config
• A few env vars are set that are metadata for the cluster, delineate those. (BONNY_POD_NAME, BONNY_POD_IP)
• BONNY_POD_NAMESPACE is confusing, its controls the namespace bonny watches
• "BONNY" shouldn't be something an end-user of an operator should be concerned with, support an env var prefix for each operator
• Split Bonny.Config into ~Bonny.Config.EndUser and ~Bonny.Config.Author (names are hard)

Splitting may be as simple as all author config is compile time config, so do it via config/prod.exs and all user config is runtime, so use env vars.