Fix output of monitor keyring path

Printing the location of the monitor keyring was incorrectly printing the location of {cluster-name}.conf, not {cluster-name}.mon.keyring

Signed-off-by: Travis Rhoden <trhoden@gmail.com>
Merge pull request #12 from trhoden/keypath

new: Fix output of monitor keyring path

Reviewed-by: Dan Mick <dan.mick@inktank.com>