`metal status` errors when checking power status on virtual machines

[vlj91]

When running metal status against a VM or group containing VMs, all of the VMs return error status for power

Node       | Power      | Ping
---------- | ---------- | ----------
vaughannode01 | error      | ok
vaughannode02 | error      | ok
vaughannode03 | error      | ok
vaughannode04 | error      | ok

[vlj91]

1. have some means of having the puts which occur within ipmi/power happen via some indirect means, so when we're running a command from metal directly they go to stdout but when run via Utils.run_command they go somewhere nice for us to use;
2. redirect $stdout temporarily and use Utils.run_command, then use the saved stdout output

[bobwhitelock]

I think you accidentally some formatting @vlj91