kubevirt_vm: simplify previous change + update comments (#56897)

lib/ansible/modules/cloud/kubevirt/kubevirt_vm.py

@@ -405,16 +405,18 @@ class KubeVirtVM(KubeVirtRawModule):
             if our_state != 'absent':
                 self.params['state'] = k8s_state = 'present'
 
+        # Start with fetching the current object to make sure it exists
+        # If it does, but we end up not performing any operations on it, at least we'll be able to return
+        # its current contents as part of the final json
         self.client = self.get_api_client()
         self._kind_resource = self.find_supported_resource(kind)
         k8s_obj = self.get_resource(self._kind_resource)
         if not self.check_mode and not vm_spec_change and k8s_state != 'absent' and not k8s_obj:
             self.fail("It's impossible to create an empty VM or change state of a non-existent VM.")
 
-        # Changes in VM's spec or any changes to VMIs warrant a full CRUD, the latter because
-        # VMIs don't really have states to manage; they're either present or don't exist
+        # If there are (potential) changes to `spec:` or we want to delete the object, that warrants a full CRUD
         # Also check_mode always warrants a CRUD, as that'll produce a sane result
-        if vm_spec_change or (ephemeral and vm_spec_change) or k8s_state == 'absent' or self.check_mode:
+        if vm_spec_change or k8s_state == 'absent' or self.check_mode:
             definition = self.construct_definition(kind, our_state, ephemeral)
             result = self.execute_crud(kind, definition)
             changed = result['changed']