Feature request

Launch actions are supposed to return their sub-entities and conditional sub-entities to so they can be introspected before running.

The ExecuteProcess action does not provide an implementation of these methods, so anything run on_exit can not be introspected

Feature description

Implement get_sub_entities in ExecuteProcess so that we can discover on_exit actions. One place where this is causing a problem right now is here launch_testing can't discover the ReadyToTest action (or even the `daemon-start' process) because it's nested down in on_exit

Implementation considerations

???