Create the test database if it doesn't exist.

There is a bootstrapping case where the test DB doesn't exist which causes reset_db to fail.

scripts/reset-test-db.sh

@@ -24,6 +24,9 @@
 
 DB_CACHE_DIR="common/test/db_cache"
 
+# Ensure the test database exists.
+echo "CREATE DATABASE IF NOT EXISTS test;" | mysql -u root
+
 # Clear out the test database
 ./manage.py lms --settings bok_choy reset_db --traceback --noinput