#### 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 key not in data:
            return {'ret': False, 'msg': "Key %s not found" % key}
        boot = data[key]
        annotation = 'BootSourceOverrideTarget@Redfish.AllowableValues'
        if annotation in boot:
            allowable_values = boot[annotation]
            if isinstance(allowable_values, list) and bootdevice not in allowable_values:
                return {'ret': False,
                        'msg': "Boot device %s not in list of allowable values (%s)" %
                               (bootdevice, allowable_values)}
        
        enabled = boot.get('BootSourceOverrideEnabled')
        target = boot.get('BootSourceOverrideTarget')
        cur_uefi_target = boot.get('UefiTargetBootSourceOverride')
        cur_boot_next = boot.get('BootNext')
        if bootdevice == 'UefiTarget':
            if not uefi_target:
                return {'ret': False,
                        'msg': "uefi_target option required to SetOneTimeBoot for UefiTarget"}
            if enabled == 'Once' and target == bootdevice and uefi_target == cur_uefi_target:
                
                return {'ret': True, 'changed': False}
            payload = {
                'Boot': {
                    'BootSourceOverrideEnabled': 'Once',
                    'BootSourceOverrideTarget': bootdevice,
                    'UefiTargetBootSourceOverride': uefi_target
                }