Update config.yml

tutor/templates/config.yml

@@ -2,6 +2,7 @@
 # These configuration values must be stored in the user's config.yml.
 MYSQL_ROOT_PASSWORD: "{{ 8|random_string }}"
 OPENEDX_MYSQL_PASSWORD: "{{ 8|random_string }}"
+MYSQL_PASSWORD: ""
 OPENEDX_SECRET_KEY: "{{ 24|random_string }}"
 ANDROID_OAUTH2_SECRET: "{{ 24|random_string }}"
 ID: "{{ 24|random_string }}"