##### 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`
- You can use M(reboot) or M(vmware_host_powerstate) module to reboot all ESXi host systems.
version_added: '2.8'
author:
- Aaron Longchamps (@alongchamps)
notes:
- Tested on vSphere 6.0
requirements:
- python >= 2.7
- PyVmomi
options:
  esxi_hostname:
    description:
    - Name of the ESXi host to work on.
    - This parameter is required if C(cluster_name) is not specified.
    type: str
  cluster_name:
    description:
    - Name of the VMware cluster to work on.
    - All ESXi hosts in this cluster will be configured.
    - This parameter is required if C(esxi_hostname) is not specified.
    type: str
  kernel_module_name:
    description:
    - Name of the kernel module to be configured.
    required: true
    type: str
  kernel_module_option:
    description:
    - Specified configurations will be applied to the given module.
    - These values are specified in key=value pairs and separated by a space when there are multiple options.