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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
```
datastore_name = self.params['datastore']
            
            datastore_cluster = self.cache.find_obj(self.content, [vim.StoragePod], datastore_name)
            if datastore_cluster:
                
                datastore_name = self.get_recommended_datastore(datastore_cluster_obj=datastore_cluster)
            
            datastore = self.cache.find_obj(self.content, [vim.Datastore], datastore_name)
        else:
            (datastore, datastore_name) = self.select_datastore(vm_obj)
        self.configspec = vim.vm.ConfigSpec()
        self.configspec.deviceChange = []
        
        self.relospec = vim.vm.RelocateSpec()
        self.relospec.deviceChange = []
        self.configure_guestid(vm_obj=vm_obj, vm_creation=True)
        self.configure_cpu_and_memory(vm_obj=vm_obj, vm_creation=True)
        self.configure_hardware_params(vm_obj=vm_obj)
        self.configure_resource_alloc_info(vm_obj=vm_obj)
        self.configure_vapp_properties(vm_obj=vm_obj)
        self.configure_disks(vm_obj=vm_obj)
        self.configure_network(vm_obj=vm_obj)
        self.configure_cdrom(vm_obj=vm_obj)
        
        network_changes = False
        for nw in self.params['networks']:
            for key in nw: