server: fix debug message when expunge a vm (#8374)

This PR fixes the debug message when expunge a vm

Author: weizhouapache

engine/orchestration/src/main/java/com/cloud/vm/VirtualMachineManagerImpl.java

@@ -602,7 +602,7 @@ private boolean isValidSystemVMType(VirtualMachine vm) {
     protected void advanceExpunge(VMInstanceVO vm) throws ResourceUnavailableException, OperationTimedoutException, ConcurrentOperationException {
         if (vm == null || vm.getRemoved() != null) {
             if (s_logger.isDebugEnabled()) {
-                s_logger.debug("Unable to find vm or vm is destroyed: " + vm);
+                s_logger.debug("Unable to find vm or vm is expunged: " + vm);
             }
             return;
         }
@@ -612,17 +612,17 @@ protected void advanceExpunge(VMInstanceVO vm) throws ResourceUnavailableExcepti
 
         try {
             if (!stateTransitTo(vm, VirtualMachine.Event.ExpungeOperation, vm.getHostId())) {
-                s_logger.debug("Unable to destroy the vm because it is not in the correct state: " + vm);
-                throw new CloudRuntimeException("Unable to destroy " + vm);
+                s_logger.debug("Unable to expunge the vm because it is not in the correct state: " + vm);
+                throw new CloudRuntimeException("Unable to expunge " + vm);
 
             }
         } catch (final NoTransitionException e) {
-            s_logger.debug("Unable to destroy the vm because it is not in the correct state: " + vm);
-            throw new CloudRuntimeException("Unable to destroy " + vm, e);
+            s_logger.debug("Unable to expunge the vm because it is not in the correct state: " + vm);
+            throw new CloudRuntimeException("Unable to expunge " + vm, e);
         }
 
         if (s_logger.isDebugEnabled()) {
-            s_logger.debug("Destroying vm " + vm);
+            s_logger.debug("Expunging vm " + vm);
         }
 
         final VirtualMachineProfile profile = new VirtualMachineProfileImpl(vm);