server: apply network ACL even if there is no network ACLs in the ACL list (#9374) (#10241)

Author: weizhouapache

server/src/main/java/org/apache/cloudstack/network/topology/AdvancedNetworkTopology.java

@@ -229,11 +229,6 @@ public boolean associatePublicIP(final Network network, final List<? extends Pub
     public boolean applyNetworkACLs(final Network network, final List<? extends NetworkACLItem> rules, final VirtualRouter router, final boolean isPrivateGateway)
             throws ResourceUnavailableException {
 
-        if (rules == null || rules.isEmpty()) {
-            logger.debug("No network ACLs to be applied for network {}", network);
-            return true;
-        }
-
         logger.debug("APPLYING NETWORK ACLs RULES");
 
         final String typeString = "network acls";