service: add options RestartPreventExitStatus and SuccessExitStatus

In some cases, like wrong configuration, restarting after error
does not help, so administrator can specify statuses by RestartPreventExitStatus
which will not cause restart of a service.

Sometimes you have non-standart exit status, so this can be specified
by SuccessfulExitStatus.

src/systemctl/systemctl.c

@@ -2148,7 +2148,7 @@ static void print_status_info(UnitStatusInfo *i) {
                 printf("\t Process: %u %s=%s ", p->pid, p->name, strna(t));
                 free(t);
 
-                good = is_clean_exit_lsb(p->code, p->status);
+                good = is_clean_exit_lsb(p->code, p->status, NULL);
                 if (!good) {
                         on = ansi_highlight_red(true);
                         off = ansi_highlight_red(false);