##### 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`
- name: Start ntpd setting for an ESXi Host with Service policy
  vmware_host_service_manager:
    hostname: '{{ vcenter_hostname }}'
    username: '{{ vcenter_username }}'
    password: '{{ vcenter_password }}'
    esxi_hostname: '{{ esxi_hostname }}'
    service_name: ntpd
    service_policy: on
    state: present
  delegate_to: localhost
- name: Stop ntpd setting for an ESXi Host
  vmware_host_service_manager:
    hostname: '{{ vcenter_hostname }}'
    username: '{{ vcenter_username }}'
    password: '{{ vcenter_password }}'
    esxi_hostname: '{{ esxi_hostname }}'
    service_name: ntpd
    state: absent
  delegate_to: localhost
'''
RETURN = r'''#
'''
try:
    from pyVmomi import vim, vmodl
except ImportError:
    pass
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.vmware import vmware_argument_spec, PyVmomi
from ansible.module_utils._text import to_native
class VmwareServiceManager(PyVmomi):