<!--- 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 -->

if property in device:
                            drive_result[property] = device[property]
                    drive_results.append(drive_result)
                drives = {'Controller': controller_name,
                          'Drives': drive_results}
                result["entries"].append(drives)
        return result
    def get_multi_disk_inventory(self):
        return self.aggregate_systems(self.get_disk_inventory)
    def get_volume_inventory(self, systems_uri):
        result = {'entries': []}
        controller_list = []
        volume_list = []
        
        properties = ['Id', 'Name', 'RAIDType', 'VolumeType', 'BlockSizeBytes',
                      'Capacity', 'CapacityBytes', 'CapacitySources',
                      'Encrypted', 'EncryptionTypes', 'Identifiers',
                      'Operations', 'OptimumIOSizeBytes', 'AccessCapabilities',
                      'AllocatedPools', 'Status']
        
        response = self.get_request(self.root_uri + systems_uri)
        if response['ret'] is False:
            return response
        data = response['data']
        if 'SimpleStorage' not in data and 'Storage' not in data:
            return {'ret': False, 'msg': "SimpleStorage and Storage resource \
                     not found"}
        if 'Storage' in data:
            
            storage_uri = data[u'Storage'][u'@odata.id']