Tested on VyOS 1.0.0 device and able to download the config via telnet/ssh.
<Configuration-Management Device="Vyatta VyOS" SystemOID=" 1.3.6.1.4.1.30803">
<Commands>
<Command Name="Reset" Value="set terminal width 0${CRLF}set terminal length 0"/>
<Command Name="Reboot" Value="reboot${CRLF}Yes"/>
<Command Name="EnterConfigMode" Value="configure"/>
<Command Name="ExitConfigMode" Value="commit${CRLF}exit"/>
<Command Name="DownloadConfig" Value="show configuration commands"/>
<Command Name="SaveConfig" Value="commit${CRLF}save"/>
<Command Name="Version" Value="show version"/>
<Command Name="MenuBased" Value="False"/>
<Command Name="VirtualPrompt" Value=":~"/>
</Commands>
</Configuration-Management>