juju_machine_lock introspection broken

[Ian Booth]

root@comp-3:/tmp# source /etc/profile.d/juju-introspection.sh
root@comp-3:/tmp# juju_machine_lock
root@comp-3:/tmp# echo $?
2

You can still run it manually

root@comp-3:/tmp# juju_agent machinelock
machine-1:
  holder: none

Looks like the introspection script is out of date, passing in an arg no longer needed.
This is a regression.

juju_machine_lock () {
  for agent in $(ls /var/lib/juju/agents); do
    juju_agent machinelock $agent 2> /dev/null
  done
}

[John A Meinel (jameinel)]

https://github.com/juju/juju/pull/13431