working with docker compose

[DanRoscigno]

• Move Ginkgo/Gomega from the ci workflow into the docker compose (which is run from the ci workflow). This allows the Ginkgo tests to access the containers directly, which is necessary because when using STREAM LOAD to upload data the frontend node (FE) redirects to a backend node (BE) by name.
• Adds a Dockerfile to build the test service
• Adds a prerequisite to the BE service that the FE be healthy before starting
• Adds a prerequisite to the test-harness service that the BE be healthy before starting