Replace custom integration runner in vdev with compose

[bruceg]

The original integration test setup had a runner block in every docker compose file with nearly identical contents. The reworked setup used by vdev removed that duplication and moved it into the tool by setting up a custom runner outside of docker compose. Unfortunately, this has created considerable complication within vdev for managing that setup external to the main docker-compose containers.

With #17025, we will have a framework for injecting bits into the compose files before they containers are built. We should use this capability to set up a standardized runner block and run the entire network of containers within docker-compose. This will simplify running integration tests in vdev and allow us to remove all the code specialized on handling the test runner separately.