[Bug fix] Path change of IPset blacklist.sh (hestiacp#3389)

* Apply update for path change of blacklist.sh

* Minor fixes for the install script

* Improve for MariaDB deprecated mysql

Author: myrevery

bin/v-add-sys-firewall

@@ -35,7 +35,8 @@ check_hestia_demo_mode
 
 # Adding default ruleset
 if [ -z "$(ls -A $HESTIA/data/firewall 2> /dev/null)" ]; then
-	cp -rf $HESTIA_INSTALL_DIR/firewall $HESTIA/data/
+	cp -rf $HESTIA_COMMON_DIR/firewall $HESTIA/data/
+	rm -f $HESTIA/data/firewall/ipset/blacklist.sh $HESTIA/data/firewall/ipset/blacklist.ipv6.sh
 fi
 
 # Updating FIREWAL_SYSTEM value