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##### SUMMARY

Two vmware modules uses `copy()` to duplicate an internal instance of a pyvmomi object. This to be able to modify the object during an iteration.

- https://github.com/ansible/ansible/blob/622a493ae03bd5e5cf517d336fc426e9d12208c7/lib/ansible/modules/cloud/vmware/vmware_guest.py#L788
- https://github.com/ansible/ansible/blob/622a493ae03bd5e5cf517d336fc426e9d12208c7/lib/ansible/modules/cloud/vmware/vmware_datastore_facts.py#L220

As explain here, https://github.com/ansible/ansible/pull/60196/files#r312643761 this is not the best approach and this may impact the performance.

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME

vmware

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```paste below
devel
```
self.module.fail_json(msg="Failed to convert template to virtual machine"
                                          " as operation unable access virtual machine"
                                          " component: %s" % to_native(cannot_access.msg))
            except vmodl.fault.InvalidArgument as invalid_argument:
                self.module.fail_json(msg="Failed to convert template to virtual machine"
                                          " due to : %s" % to_native(invalid_argument.msg))
            except Exception as generic_exc:
                self.module.fail_json(msg="Failed to convert template to virtual machine"
                                          " due to generic error : %s" % to_native(generic_exc))
            
            
            uuid_action = [x for x in self.current_vm_obj.config.extraConfig if x.key == "uuid.action"]
            if not uuid_action:
                uuid_action_opt = vim.option.OptionValue()
                uuid_action_opt.key = "uuid.action"
                uuid_action_opt.value = "create"
                self.configspec.extraConfig.append(uuid_action_opt)
            self.change_detected = True
        
        if 'existing_vm' in self.params['customization'] and self.params['customization']['existing_vm']:
            if self.current_vm_obj.config.template:
                self.module.fail_json(msg="VM is template, not support guest OS customization.")
            if self.current_vm_obj.runtime.powerState != vim.VirtualMachinePowerState.poweredOff:
                self.module.fail_json(msg="VM is not in poweroff state, can not do guest OS customization.")
            cus_result = self.customize_exist_vm()
            if cus_result['failed']:
                return cus_result
        vm_facts = self.gather_facts(self.current_vm_obj)
        return {'changed': self.change_applied, 'failed': False, 'instance': vm_facts}
    def customize_exist_vm(self):