Package fakebinary as using morerequire introduces build cycles.

Package morerequire includes more require functions than "github.com/stretchr/testify/require" Do not add dependencies on any main code as it will cause cycles.

RequireEnvoyVersionsTestServer serves "/envoy-versions.json", containing download links a fake Envoy archive.

RequireFakeEnvoyTarGz makes a fake envoy.tar.gz nolint:gosec.

RequireRun executes Run on the given Runtime and calls shutdown after it started.

TarballURL gives the expected download URL for the given runtime.GOOS and Envoy version.

FakeReleaseDate helps us make sure main code doesn't accidentally write the system time instead of the expected.

Runner allows us to not introduce dependency cycles on envoy.Runtime.