testing/deployer: rename various terms to better align with v2 and avoid confusion (#19600)
Conceptually renaming the following topology terms to avoid confusion with v2 and to better align with it:
- ServiceID -> ID
- Service -> Workload
- Upstream -> Destination
Co-authored-by: R.B. Boyer <4903+rboyer@users.noreply.github.com>
docs: spike of info about how to use deployer topology tests (#19576)
Initial developer facing docs on how to write deployer (topology) integration tests.
Co-authored-by: R.B. Boyer <4903+rboyer@users.noreply.github.com>