Hello!
I'm trying to flash via special tool, which is not implemented in lava. I did it successfully by editing device dictionary. 
Next want to use pre power command. That's why I use lxc. But how trigger protocol to use it?

It doesnt work:
- deploy:
    namespace: target
    timeout:
      minutes: 20
    to: flasher
    images:
      flash_dir:
        url: file:///opt/image.zip
    os: oe
    protocols:
      lava-lxc:
      - action: flasher-deploy
        request: pre-power-command

Ilya