[xcuActor] Cryocooler commands need to be wrapped with security commands

This issue was initially filed into JIRA by 'cloomis' at 17/Mar/16 3:00 PM as ICS-27.

The Sunpower cryocooler blocks commands which set internal state with a password. The actor-supported commands ("cooler on" and "cooler power") wrap the device commands in a pair of unlock and unlock commands.

Either the controller should be unlocked separately, or the raw command needs to grow an "unlock" argument.