Hot fix for CentOS 6 for "systemctl"

Because I made this issue :)

bin/v-restart-proxy

@@ -50,9 +50,13 @@ if [ -z "$PROXY_SYSTEM" ] || [ "$PROXY_SYSTEM" = 'remote' ]; then
 fi
 
 # Restart system
-# service $PROXY_SYSTEM restart >/dev/null 2>&1
-systemctl reset-failed $PROXY_SYSTEM
-systemctl restart $PROXY_SYSTEM > /dev/null 2>&1
+if [ ! -f "/etc/debian_version" ]; then
+    service $PROXY_SYSTEM restart >/dev/null 2>&1
+else
+    systemctl reset-failed $PROXY_SYSTEM
+    systemctl restart $PROXY_SYSTEM > /dev/null 2>&1
+fi
+
 if [ $? -ne 0 ]; then
     send_email_report
     check_result $E_RESTART "$PROXY_SYSTEM restart failed"