<!--- Verify first that your issue is not already reported on GitHub -->
<!--- Also test if the latest release and devel branch are affected too -->
<!--- Complete *all* sections as described, this form is processed automatically -->

##### 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
```
}
DOCUMENTATION = '''
---
module: vmware_datastore_facts
short_description: Gather facts about datastores available in given vCenter
description:
    - This module can be used to gather facts about datastores in VMware infrastructure.
    - All values and VMware object names are case sensitive.
version_added: 2.5
author:
    - Tim Rightnour (@garbled1)
notes:
    - Tested on vSphere 5.5, 6.0 and 6.5
requirements:
    - "python >= 2.6"
    - PyVmomi
options:
   name:
     description:
     - Name of the datastore to match.
     - If set, facts of specific datastores are returned.
     required: False
     type: str
   datacenter:
     description:
     - Datacenter to search for datastores.
     - This parameter is required, if C(cluster) is not supplied.
     required: False
     aliases: ['datacenter_name']
     type: str