Add a --quiet flag to suppress non-warning or error messages.

octodns/cmds/args.py

@@ -37,6 +37,8 @@ class ArgumentParser(_Base):
         _help = 'Increase verbosity to get details and help track down issues'
         self.add_argument('--debug', action='store_true', default=False,
                           help=_help)
+        self.add_argument('--quiet', action='store_true', default=False,
+                          help='Only print warning and error messages')
 
         args = super(ArgumentParser, self).parse_args()
         self._setup_logging(args, default_log_level)
@@ -59,7 +61,11 @@ class ArgumentParser(_Base):
             handler.setFormatter(Formatter(fmt=fmt))
             logger.addHandler(handler)
 
-        logger.level = DEBUG if args.debug else default_log_level
+        logger.level = default_log_level
+        if args.debug:
+            logger.level = DEBUG
+        elif args.quiet:
+            logger.level = WARN
 
         # boto is noisy, set it to warn
         getLogger('botocore').level = WARN