* remove name var necessity in docker scenario
* rm log
* parse from docker load
* rm docker image name var from enos-variables
* rm boundary_docker_image_name from files
* test(e2e): add GCP infra resources and tests for enos testing
- add 1 new `gcp_target` module that creates a GCP VM instance with labels for filtering
- add GCP dynamic host catalog e2e tests