paths.go
func serverCommandPath(dcid, srvid, cmd string) string {
	return serverPath(dcid, srvid) + slash(cmd)
}
func serverCommandPath(dcid, srvid, cmd string) string {
	return serverPath(dcid, srvid) + slash(cmd)
}
// server_cmd_path returns the string   "/datacenters/<dcid>/servers/<srvid>/<cmd>"