/// The command used to proxy ssh requests through GCP's Identity-Aware Proxy.const PROXY_COMMAND: &str = "gcloud compute start-iap-tunnel ubuntu-14-04 25784 --listen-on-stdin --project=warp-ssh-integration-testing --zone=us-east4-a";/// The command used to proxy remote-server ssh requests through GCP's Identity-Aware Proxy.const REMOTE_SERVER_PROXY_COMMAND: &str = "gcloud compute start-iap-tunnel ssh-remote-server-testing 22 --listen-on-stdin --project=warp-ssh-integration-testing --zone=us-east4-b"; /// Produces a user/host pair for testing a given remote shell.pub fn user_host(shell: &str) -> String {    format!("{shell}@ubuntu-14-04")}/// Produces a user/host pair for remote-server tests.pub fn remote_server_user_host(shell: &str) -> String {    format!("{shell}@ssh-remote-server-testing")} /// Produces the full ssh command to run to ssh into a given remote shell.pub fn ssh_command(shell: &str, should_use_ssh_wrapper: bool) -> String {    [        if should_use_ssh_wrapper {            "ssh"        } else {            "command ssh"        },        &user_host(shell),        "-p 25784",        &format!("-o ProxyCommand=\"{PROXY_COMMAND}\""),        "-o StrictHostKeyChecking=no",        "-o UserKnownHostsFile=/dev/null",    ]    .join(" ")} /// Produces the full ssh command to connect to the dedicated remote-server test host.pub fn remote_server_ssh_command(shell: &str, should_use_ssh_wrapper: bool) -> String {    [        if should_use_ssh_wrapper {            "ssh"        } else {            "command ssh"        },        &remote_server_user_host(shell),        "-p 22",        &format!("-o ProxyCommand=\"{REMOTE_SERVER_PROXY_COMMAND}\""),        "-o PreferredAuthentications=password",        "-o PubkeyAuthentication=no",        "-o StrictHostKeyChecking=no",        "-o UserKnownHostsFile=/dev/null",    ]    .join(" ")}