Update ynh_add_fail2ban_config helper

scripts/_common.sh

@@ -83,7 +83,7 @@ enabled = true
 port = $ports
 filter = $app
 logpath = $logpath
-maxretry = $max_retry" 
+maxretry = $max_retry
 EOF
 
   sudo tee $finalfail2banfilterconf <<EOF
@@ -91,16 +91,17 @@ EOF
 before = common.conf
 [Definition]
 failregex = $failregex
-ignoreregrex =" 
+ignoreregex =
 EOF
 
   ynh_store_file_checksum "$finalfail2banjailconf"
   ynh_store_file_checksum "$finalfail2banfilterconf"
   
-	sudo systemctl restart fail2ban
-	if local fail2ban_error="$(tail -n50 /var/log/fail2ban.log | grep "WARNING Command.*$app.*addfailregex")"
+  systemctl restart fail2ban
+  local fail2ban_error="$(journalctl -u fail2ban | tail -n50 | grep "WARNING.*$app.*")"
+  if [ -n "$fail2ban_error" ]
   then
-		echo "[ERR] Fail2ban fail to load the jail for $app" >&2
+    echo "[ERR] Fail2ban failed to load the jail for $app" >&2
     echo "WARNING${fail2ban_error#*WARNING}" >&2
   fi
 }