Revert "Revert "Share the config between classes""

This reverts commit 42eb0dc31d82a87af205b24348f85b8b1a684d6d.

Conflicts:
	lib/health_manager.rb
	lib/health_manager/desired_state.rb
	spec/unit/desired_state_spec.rb
Revert "Revert "Refactor droplet intervals""

This reverts commit 291baed084172c571915b0e6e5a2b93c45e24ff4.
Use global config

Conflicts:
	spec/unit/desired_state_spec.rb