setup: Add the ssh url arg to the setup utility

cli/util/args.go

@@ -164,6 +164,7 @@ type SetupPkgArgs struct {
 // parsed result.
 type SetupSvcArgs struct {
 	BinaryPath string   `arg:"--binary-path" help:"path to the binary"`
+	SSHURL     string   `arg:"--ssh-url" help:"transport the etcd client connection over SSH to this server"`
 	Seeds      []string `arg:"--seeds,env:MGMT_SEEDS" help:"default etcd client endpoints"`
 	NoServer   bool     `arg:"--no-server" help:"do not start embedded etcd server (do not promote from client to peer)"`
 

setup/svc.go

@@ -110,6 +110,11 @@ func (obj *Svc) Run(ctx context.Context) error {
 			"run", // run command
 		}
 
+		if s := obj.SetupSvcArgs.SSHURL; s != "" {
+			// TODO: validate ssh url? Should be user@server:port
+			argv = append(argv, fmt.Sprintf("--ssh-url=%s", s))
+		}
+
 		if seeds := obj.SetupSvcArgs.Seeds; len(seeds) > 0 {
 			// TODO: validate each seed?
 			s := fmt.Sprintf("--seeds=%s", strings.Join(seeds, ","))