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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
```
validate_certs: no
  delegate_to: localhost
  register: facts
- name: Gather facts from datacenter about specific datastore
  vmware_datastore_facts:
    hostname: '{{ vcenter_hostname }}'
    username: '{{ vcenter_username }}'
    password: '{{ vcenter_password }}'
    datacenter_name: '{{ datacenter_name }}'
    name: datastore1
  delegate_to: localhost
  register: facts
'''
RETURN = """
datastores:
    description: metadata about the available datastores
    returned: always
    type: list
    sample: [
        {
            "accessible": false,
            "capacity": 42681237504,
            "datastore_cluster": "datacluster0",
            "freeSpace": 39638269952,
            "maintenanceMode": "normal",
            "multipleHostAccess": false,
            "name": "datastore2",
            "provisioned": 12289211488,
            "type": "VMFS",
            "uncommitted": 9246243936,