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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
```
"""
        Adds vmdk file described by expected_disk_spec['filename'], retrieves the file
        information and adds the correct spec to self.configspec.deviceChange.
        """
        filename = expected_disk_spec['filename']
        
        if (vm_obj and diskspec.device.backing.fileName != filename) or vm_obj is None:
            vmdk_file = self.find_vmdk(expected_disk_spec['filename'])
            diskspec.device.backing.fileName = expected_disk_spec['filename']
            diskspec.device.capacityInKB = VmomiSupport.vmodlTypes['long'](vmdk_file.fileSize / 1024)
            diskspec.device.key = -1
            self.change_detected = True
            self.configspec.deviceChange.append(diskspec)
    def configure_disks(self, vm_obj):
        
        if len(self.params['disk']) == 0:
            return
        scsi_ctl = self.get_vm_scsi_controller(vm_obj)
        
        if vm_obj is None or scsi_ctl is None:
            scsi_ctl = self.device_helper.create_scsi_controller(self.get_scsi_type())
            self.change_detected = True
            self.configspec.deviceChange.append(scsi_ctl)
        disks = [x for x in vm_obj.config.hardware.device if isinstance(x, vim.vm.device.VirtualDisk)] \
            if vm_obj is not None else None
        if disks is not None and self.params.get('disk') and len(self.params.get('disk')) < len(disks):
            self.module.fail_json(msg="Provided disks configuration has less disks than "
                                      "the target object (%d vs %d)" % (len(self.params.get('disk')), len(disks)))