## Summary
- Refactor Simulator state to use service/application name instead of UUID, and node hostname instead of UUID.
- Refactor observations to read the hostname/name instead of UUID.
- Refactor rewards as well.
- Refactor configs to specify name instead of reference that will be translated to UUID.
## Test process
Existing unit tests pass. Inspected the printout from running 'describe_state' on arcd_uc2_network' to verify that names are used to report state.
## Checklist
- [x] PR is linked to a **work item**
- [x] **acceptance criteria** of linked ticket are met
- [x] performed **self-review** of the code
- [na] written **tests** for any new functionality added with this PR
- [na] updated the **documentation** if this PR changes or adds functionality
- [x] written/updated **design docs** if this PR implements new functionality
- [na] updated the **change log**
- [x] ran **pre-commit** checks for code style
- [x] attended to any **TO-DOs** left in the code
Related work items: #2131
ffeb04d6ed