##### 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`
- If set to C(present), then enter datastore into maintenance mode.
      - If set to C(present) and datastore is already in maintenance mode, then no action will be taken.
      - If set to C(absent) and datastore is in maintenance mode, then exit maintenance mode.
      - If set to C(absent) and datastore is not in maintenance mode, then no action will be taken.
      choices: [ present, absent ]
      default: present
      required: False
      type: str
extends_documentation_fragment: vmware.documentation
'''
EXAMPLES = '''
- name: Enter datastore into Maintenance Mode
  vmware_datastore_maintenancemode:
    hostname: '{{ vcenter_hostname }}'
    username: '{{ vcenter_username }}'
    password: '{{ vcenter_password }}'
    datastore: '{{ datastore_name }}'
    state: present
  delegate_to: localhost
- name: Enter all datastores under cluster into Maintenance Mode
  vmware_datastore_maintenancemode:
    hostname: '{{ vcenter_hostname }}'
    username: '{{ vcenter_username }}'
    password: '{{ vcenter_password }}'
    cluster_name: '{{ cluster_name }}'
    state: present
  delegate_to: localhost
- name: Enter all datastores under datastore cluster into Maintenance Mode
  vmware_datastore_maintenancemode:
    hostname: '{{ vcenter_hostname }}'