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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
```
version_added: '2.3'
  folder:
    description:
    - Destination folder, absolute path to find an existing guest or create the new guest.
    - The folder should include the datacenter. ESX's datacenter is ha-datacenter.
    - This parameter is case sensitive.
    - This parameter is required, while deploying new virtual machine. version_added 2.5.
    - 'If multiple machines are found with same name, this parameter is used to identify
       uniqueness of the virtual machine. version_added 2.5'
    - 'Examples:'
    - '   folder: /ha-datacenter/vm'
    - '   folder: ha-datacenter/vm'
    - '   folder: /datacenter1/vm'
    - '   folder: datacenter1/vm'
    - '   folder: /datacenter1/vm/folder1'
    - '   folder: datacenter1/vm/folder1'
    - '   folder: /folder1/datacenter1/vm'
    - '   folder: folder1/datacenter1/vm'
    - '   folder: /folder1/datacenter1/vm/folder2'
  hardware:
    description:
    - Manage virtual machine's hardware attributes.
    - All parameters case sensitive.
    - 'Valid attributes are:'
    - ' - C(hotadd_cpu) (boolean): Allow virtual CPUs to be added while the virtual machine is running.'
    - ' - C(hotremove_cpu) (boolean): Allow virtual CPUs to be removed while the virtual machine is running.
          version_added: 2.5'
    - ' - C(hotadd_memory) (boolean): Allow memory to be added while the virtual machine is running.'
    - ' - C(memory_mb) (integer): Amount of memory in MB.'
    - ' - C(nested_virt) (bool): Enable nested virtualization. version_added: 2.5'