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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
```
- 192.168.1.1
      - 192.168.1.2
      domain: my_domain
      password: new_vm_password
      runonce:
      - powershell.exe -ExecutionPolicy Unrestricted -File C:\Windows\Temp\ConfigureRemotingForAnsible.ps1 -ForceNewSSLCert -EnableCredSSP
  delegate_to: localhost
- name:  Clone a virtual machine from Linux template and customize
  vmware_guest:
    hostname: "{{ vcenter_hostname }}"
    username: "{{ vcenter_username }}"
    password: "{{ vcenter_password }}"
    validate_certs: no
    datacenter: "{{ datacenter }}"
    state: present
    folder: /DC1/vm
    template: "{{ template }}"
    name: "{{ vm_name }}"
    cluster: DC1_C1
    networks:
      - name: VM Network
        ip: 192.168.10.11
        netmask: 255.255.255.0
    wait_for_ip_address: True
    customization:
      domain: "{{ guest_domain }}"
      dns_servers:
        - 8.9.9.9
        - 7.8.8.9
      dns_suffix: