##### SUMMARY
The following modules throw a `[WARNING]: Found internal 'results' key in module return, renamed to 'ansible_module_results'`:

* [ ]  `vmware_datastore_maintenancemode`
* [ ]  `vmware_host_kernel_manager`
* [ ]  `vmware_host_ntp`
* [ ]  `vmware_host_service_manager`
* [ ]  `vmware_tag`

I've generated the list like this:

`cd lib/ansible/modules/cloud/vmware/ && grep exit_json *.py | grep results= | cut -d ':' -f 1 | cut -d '.' -f 1`

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
vmware

##### ANSIBLE VERSION
`devel`
spec = vmware_argument_spec()
    spec.update(dict(
        datastore=dict(type='str', required=False),
        cluster_name=dict(type='str', required=False),
        datastore_cluster=dict(type='str', required=False),
        state=dict(type='str', default='present', choices=['present', 'absent']),
    ))
    module = AnsibleModule(
        argument_spec=spec,
        required_one_of=[
            ['datastore', 'cluster_name', 'datastore_cluster'],
        ],
    )
    datastore_maintenance_mgr = VmwareDatastoreMaintenanceMgr(module=module)
    datastore_maintenance_mgr.ensure()
if __name__ == '__main__':
    main()