try another way to stop vpnclient when firewall is blocked by the lock

scripts/upgrade

@@ -110,7 +110,7 @@ ynh_install_app_dependencies "$pkg_dependencies"
 ynh_print_info --message="Stopping VPN client to apply config changes..."
 
 ynh_systemd_action --action="stop" --service_name="$service_checker_name.timer"
-ynh_systemd_action --action="stop" --service_name="$service_name"
+/usr/local/bin/ynh-vpnclient stop
 
 # Keep a copy of existing config files before overwriting them
 tmp_dir=$(mktemp -d /tmp/vpnclient-upgrade-XXX)
@@ -161,7 +161,7 @@ fi
 ynh_print_info "Restart services..."
 
 # this is meant to propagate the new files and configs
-ynh_systemd_action --action="start" --service_name="$service_name"
+ynh_systemd_action --action="restart" --service_name="$service_name"
 ynh_systemd_action --action="start" --service_name="$service_checker_name.timer"
 
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