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This PR does two things:
Update our SSH code so it properly times out connections. For some reason, the timeout built into Go’s SSH library doesn’t work, and as a result, our tests that use SSH (e.g., module-server with persistent-ebs-volume) sometimes hang for a very long time or forever.Update: it turns out the SSH timeouts do work and in reality, the persistent-ebs-volume test was successfully connecting over SSH, but then callingsleep 300
! I've removed this change, but if we ever need it in the future, it's in this PR.Add a
SkipStageEnvVarSet
to make it easier to distinguish between local dev and CI server.