kvm: fix ovs network creation issue

This fixes the issue when create a ovs network
```
2024-10-29 16:02:45,089 WARN  [resource.wrapper.LibvirtOvsFetchInterfaceCommandWrapper] (agentRequest-Handler-2:null) (logid:e716722e) Network interface: ''cloudbr1'' not found
```

This is a regression of a previous security release
see "framework/cluster: improve cluster service, integration API server"

since we now use NetworkInterface.getByName to get network interface, we should NOT add single quotes before/after the label.

Author: weizhouapache

plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/wrapper/LibvirtOvsFetchInterfaceCommandWrapper.java

@@ -92,7 +92,7 @@ public Ternary<String, String, String> getInterfaceDetails(String interfaceName)
 
     @Override
     public Answer execute(final OvsFetchInterfaceCommand command, final LibvirtComputingResource libvirtComputingResource) {
-        final String label = "'" + command.getLabel() + "'";
+        final String label = command.getLabel();
 
         s_logger.debug("Will look for network with name-label:" + label);
         try {