##### 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`
- Tested on vSphere 6.5
requirements:
- python >= 2.6
- PyVmomi
options:
  cluster_name:
    description:
    - Name of the cluster.
    - Service settings are applied to every ESXi host system/s in given cluster.
    - If C(esxi_hostname) is not given, this parameter is required.
    type: str
  esxi_hostname:
    description:
    - ESXi hostname.
    - Service settings are applied to this ESXi host system.
    - If C(cluster_name) is not given, this parameter is required.
    type: str
  state:
    description:
    - Desired state of service.
    - "State value 'start' and 'present' has same effect."
    - "State value 'stop' and 'absent' has same effect."
    choices: [ absent, present, restart, start, stop ]
    type: str
    default: 'start'
  service_policy:
    description:
    - Set of valid service policy strings.
    - If set C(on), then service should be started when the host starts up.
    - If set C(automatic), then service should run if and only if it has open firewall ports.