enhancement: fix file perms and make sure the folder exists

helpers/fail2ban

@@ -100,9 +100,13 @@ ignoreregex =
     ynh_add_config --template="f2b_jail.conf" --destination="/etc/fail2ban/jail.d/$app.conf"
     ynh_add_config --template="f2b_filter.conf" --destination="/etc/fail2ban/filter.d/$app.conf"
 
-    # Create the logfile if it doesn't exist, as fail2ban require an existing file
+    # Create the folder and logfile if they doesn't exist,
+    # as fail2ban require an existing logfile before configuration
+    mkdir -p "/var/log/$app"
     if [ ! -f "$logpath" ]; then
         touch "$logpath"
+        chown -R "$app:$app" "$logpath"
+        chmod -R u=rwX,g=rX,o= "$logpath"
     fi
 
     ynh_systemd_action --service_name=fail2ban --action=reload --line_match="(Started|Reloaded) Fail2Ban Service" --log_path=systemd