<!--- 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 -->

return self.aggregate_chassis(self.get_chassis_health_report)
    def get_manager_health_report(self, manager_uri):
        subsystems = []
        return self.get_health_report('Manager', manager_uri, subsystems)
    def get_multi_manager_health_report(self):
        return self.aggregate_managers(self.get_manager_health_report)
    def set_manager_nic(self, nic_addr, nic_config):
        
        response = self.get_request(self.root_uri + self.manager_uri)
        if response['ret'] is False:
            return response
        data = response['data']
        if 'EthernetInterfaces' not in data:
            return {'ret': False, 'msg': "EthernetInterfaces resource not found"}
        ethernetinterfaces_uri = data["EthernetInterfaces"]["@odata.id"]
        response = self.get_request(self.root_uri + ethernetinterfaces_uri)
        if response['ret'] is False:
            return response
        data = response['data']
        uris = [a.get('@odata.id') for a in data.get('Members', []) if
                a.get('@odata.id')]
        
        target_ethernet_uri = None
        target_ethernet_current_setting = None
        if nic_addr == 'null':
            
            nic_addr = (self.root_uri).split('/')[-1]
            nic_addr = nic_addr.split(':')[0]  
        for uri in uris:
            response = self.get_request(self.root_uri + uri)