gerrit: set default log to notice

We don't use logging.info anywhere, so shouldn't have impact there.
But we do rely on --verbose behavior not defaulting to on.

BUG=None
TEST=`gerrit inspect 1234` isn't verbose by default

Change-Id: Ie65b42c160a1c304a1c5a4573c64dd724bd7bf13
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/2246733
Reviewed-by: Alex Klein <saklein@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
diff --git a/scripts/gerrit.py b/scripts/gerrit.py
index d43f1b5..b345f53 100644
--- a/scripts/gerrit.py
+++ b/scripts/gerrit.py
@@ -869,7 +869,8 @@
   actions = _GetActions()
 
   site_params = config_lib.GetSiteParams()
-  parser = commandline.ArgumentParser(description=description)
+  parser = commandline.ArgumentParser(
+      description=description, default_log_level='notice')
   parser.add_argument('-i', '--internal', dest='gob', action='store_const',
                       default=site_params.EXTERNAL_GOB_INSTANCE,
                       const=site_params.INTERNAL_GOB_INSTANCE,