Simplify getting a hostinfo or starting a handshake with one (#954)

ssh.go

@@ -607,11 +607,10 @@ func sshCreateTunnel(ifce *Interface, fs interface{}, a []string, w sshd.StringW
 		}
 	}
 
-	hostInfo = ifce.handshakeManager.AddVpnIp(vpnIp)
+	hostInfo = ifce.handshakeManager.StartHandshake(vpnIp, nil)
 	if addr != nil {
 		hostInfo.SetRemote(addr)
 	}
-	ifce.getOrHandshake(vpnIp)
 
 	return w.WriteLine("Created")
 }