## Summary
This PR removes the hardcoding of Link bandwidth, and makes it possible to be configured via the network yaml definitions.
Link bandwidth will still default to 100 if this is not present, to prevent breaking all previous defined networks.
## Test process
All tests continue to pass.
`basic_network_config.yaml` now provides a non-default link bandwidth which is confirmed within unit tests.
## Checklist
- [X] PR is linked to a **work item**
- [X] **acceptance criteria** of linked ticket are met
- [X] performed **self-review** of the code
- [X] written **tests** for any new functionality added with this PR
- [X] updated the **documentation** if this PR changes or adds functionality
- [ ] written/updated **design docs** if this PR implements new functionality
- [] 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: #2457
