<!--- 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 -->

response = self.get_request(self.root_uri + self.manager_uri)
        if response['ret'] is False:
            return response
        data = response['data']
        if 'LogServices' not in data:
            return {'ret': False, 'msg': "LogServices resource not found"}
        
        logs_uri = data["LogServices"]["@odata.id"]
        response = self.get_request(self.root_uri + logs_uri)
        if response['ret'] is False:
            return response
        data = response['data']
        for log_svcs_entry in data[u'Members']:
            response = self.get_request(self.root_uri + log_svcs_entry["@odata.id"])
            if response['ret'] is False:
                return response
            _data = response['data']
            
            if "Actions" in _data:
                if "#LogService.ClearLog" in _data[u"Actions"]:
                    self.post_request(self.root_uri + _data[u"Actions"]["#LogService.ClearLog"]["target"], {})
                    if response['ret'] is False:
                        return response
        return {'ret': True}
    def aggregate(self, func, uri_list, uri_name):