log debug command output at info level

The rug normally runs with debugging turned off, so when we want to see
the output of the debug command we have to restart it. Increase the log
level to info to avoid that step.

Change-Id: I869b9ba6319cb27e48ce54cdf81a18bc4b5b57b6
Merge pull request #106 from dhellmann/debug-command-output

log debug command output at info level