findmissing: initdb_stable: Convert to use logging

With logging now set up, let's use it.

BUG=None
TEST=Run on GCE

Change-Id: Id559ede284b81dd1317b75c3e64e527bf054e6f1
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/2196219
Reviewed-by: Curtis Malainey <cujomalainey@chromium.org>
Commit-Queue: Guenter Roeck <groeck@chromium.org>
Tested-by: Guenter Roeck <groeck@chromium.org>
1 file changed