TCPEchoResponds takes a TCP address URL and a Pod name and checks if a go-echo instance is running on that Pod at that address.

EchoImage works with TCP, UDP, HTTP, TLS and responds with basic information about its environment and echo Sample response: Welcome, you are connected to node kind-control-plane.

EnvironmentCleanupTimeout is the amount of time that will be given by the test suite to the testing environment to perform its cleanup when the test suite is shutting down.

HTTPBinImage is the container image name we use for deploying the "httpbin" HTTP testing tool.