New replacements provide ability to use proxy configuration for worker nodes
and workload deployment.
To use proxy the following env vars should be exported for the session when
running phases: HTTP_PROXY, HTTPS_PROXY and NO_PROXY
Make sure to define all of them, especially NO_PROXY. For example, without
adding cluster IP addresses the deployment will fail.
Change-Id: Id08126f77e0a9da31318f1a239c51a6c78a7c88e
88d676a567