<!--- Verify first that your feature was not already discussed on GitHub -->
<!--- Complete *all* sections as described, this form is processed automatically -->

##### SUMMARY
<!--- Describe the new feature/improvement briefly below -->
Add new commands to the Redfish remote_management modules to perform firmware update requests.

##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->
redfish_config.py
redfish_utils.py

##### ADDITIONAL INFORMATION
<!--- Describe how the feature would be used, why it is needed and what it would solve -->
Operators need a way to update firmware on Redfish managed systems. Would like an extension made to be able to perform SimpleUpdate actions with a specified firmware image. At the very minimum we can point to a remote HTTP/TFTP/SCP/etc server, but if possible, it might be good to spin up a lightweight HTTP server to service the request in case one isn't provisioned.

<!--- Paste example playbooks or commands between quotes below -->
```yaml
  - name: Pull style update
    redfish_config:
      category: Update
      command: PullUpdate
      image: http://my.file.repo/someimage.bin
      targets:
        - /redfish/v1/Systems/1
        - /redfish/v1/Systems/2
      baseuri: "{{ baseuri }}"
      username: "{{ username }}"
      password: "{{ password }}"
```

<!--- HINT: You can also paste gist.github.com links for larger files -->

data = response['data']
                if 'PowerControl' in data:
                    if len(data['PowerControl']) > 0:
                        data = data['PowerControl'][0]
                        for property in properties:
                            if property in data:
                                chassis_power_result[property] = data[property]
                else:
                    return {'ret': False, 'msg': 'Key PowerControl not found.'}
                chassis_power_results.append(chassis_power_result)
            else:
                return {'ret': False, 'msg': 'Key Power not found.'}
        result['entries'] = chassis_power_results
        return result
    def get_chassis_thermals(self):
        result = {}
        sensors = []
        key = "Thermal"
        
        properties = ['Name', 'PhysicalContext', 'UpperThresholdCritical',
                      'UpperThresholdFatal', 'UpperThresholdNonCritical',
                      'LowerThresholdCritical', 'LowerThresholdFatal',
                      'LowerThresholdNonCritical', 'MaxReadingRangeTemp',
                      'MinReadingRangeTemp', 'ReadingCelsius', 'RelatedItem',
                      'SensorNumber']
        
        for chassis_uri in self.chassis_uris:
            response = self.get_request(self.root_uri + chassis_uri)
            if response['ret'] is False:
                return response