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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
```
- This parameter is case sensitive.
    default: ha-datacenter
  cluster:
    description:
    - The cluster name where the virtual machine will run.
    - This is a required parameter, if C(esxi_hostname) is not set.
    - C(esxi_hostname) and C(cluster) are mutually exclusive parameters.
    - This parameter is case sensitive.
    version_added: '2.3'
  esxi_hostname:
    description:
    - The ESXi hostname where the virtual machine will run.
    - This is a required parameter, if C(cluster) is not set.
    - C(esxi_hostname) and C(cluster) are mutually exclusive parameters.
    - This parameter is case sensitive.
  annotation:
    description:
    - A note or annotation to include in the virtual machine.
    version_added: '2.3'
  customvalues:
    description:
    - Define a list of custom values to set on virtual machine.
    - A custom value object takes two fields C(key) and C(value).
    - Incorrect key and values will be ignored.
    version_added: '2.3'
  networks:
    description:
    - A list of networks (in the order of the NICs).
    - Removing NICs is not allowed, while reconfiguring the virtual machine.
    - All parameters and VMware object names are case sensetive.