#### SUMMARY
This feature would implement a UpdateUserName command for the Accounts category of redfish_command, to update user name. And also implement a UpdatePasswordPolicy command for the Accounts category of redfish_command to change password policy.

##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME
redfish_command

##### ADDITIONAL INFORMATION
These 2 commands would help user to update user name or update password policy

result['ret'] = True
            data = response['data']
            if 'Power' in data:
                power_uri = data[u'Power'][u'@odata.id']
            else:
                continue
            response = self.get_request(self.root_uri + power_uri)
            data = response['data']
            if key not in data:
                return {'ret': False, 'msg': "Key %s not found" % key}
            psu_list = data[key]
            for psu in psu_list:
                psu_not_present = False
                psu_data = {}
                for property in properties:
                    if property in psu:
                        if psu[property] is not None:
                            if property == 'Status':
                                if 'State' in psu[property]:
                                    if psu[property]['State'] == 'Absent':
                                        psu_not_present = True
                            psu_data[property] = psu[property]
                if psu_not_present:
                    continue
                psu_results.append(psu_data)
        result["entries"] = psu_results
        if not result["entries"]:
            return {'ret': False, 'msg': "No PowerSupply objects found"}
        return result
    def get_multi_psu_inventory(self):