Bump SQLAlchemy logging to WARNING level

The previous setting of INFO was logging far too much information into
the deploy logs, so bumping it up to WARNING for now.  This should be
made configurable in the future.

tds/configure_logging.py

@@ -106,7 +106,7 @@ def configure_logging(config_dir, verbosity, use_color, daemon=False):
                             use_color=use_color)
 
     sqla_logger = logging.getLogger('sqlalchemy.engine')
-    sqla_logger.setLevel(20)
+    sqla_logger.setLevel(logging.WARNING)
 
     if not daemon:
         log_wrap.add_stream(sqla_logger, 'stdout', stream=sys.stdout,