uppercase log level to accomodate user input of either case

projects/pt1/e2e_testing/main.py

@@ -94,6 +94,7 @@ def _get_argparse():
 
 def main():
     args = _get_argparse().parse_args()
+    args.log_level = args.log_level.upper()
 
     logger = logging.getLogger() # use root logger by default. Easy to change later.
     logger.setLevel(logging.NOTSET)