Suppressed noisy loggers

(cherry picked from commit f13d337a)

run_tests.py

@@ -10,6 +10,14 @@ because the workbench SDK's settings file is not inside any python module.
 import os
 import sys
 
+import logging
+
+logging_level_overrides = {
+    'workbench.views': logging.ERROR,
+    'django.request': logging.ERROR,
+    'workbench.runtime': logging.ERROR,
+}
+
 if __name__ == "__main__":
     # Use the workbench settings file:
     os.environ.setdefault("DJANGO_SETTINGS_MODULE", "workbench.settings")
@@ -19,6 +27,9 @@ if __name__ == "__main__":
     from django.conf import settings
     settings.INSTALLED_APPS += ("problem_builder", )
 
+    for noisy_logger, log_level in logging_level_overrides.iteritems():
+        logging.getLogger(noisy_logger).setLevel(log_level)
+
     from django.core.management import execute_from_command_line
     args = sys.argv[1:]
     paths = [arg for arg in args if arg[0] != '-']