feat(DS-263): add an option to disable default MFE

[dcoa]

Add an option to disable the default MFE

Description

This PR creates a variable DISTRO_DISABLE_MFE to add waffle flags and use the frontend legacy (courseware).

By default DISTRO_DISABLE_MFE is false.

How to test

• Create an environment with stack builder and Distro (this branch), with strain create and:

  STRAIN_NAME: distromfe
  STRAIN_TUTOR_VERSION: v14.0.1
  DEV_PROJECT_NAME: distromfe_dev
  LOCAL_PROJECT_NAME: distromfe_local
  STRAIN_TUTOR_PLUGINS:
  - REPO: tutor-contrib-edunext-distro
  VERSION: dcoa/disable-mfe-nuez
  EGG: tutor-contrib-edunext-distro==v3.0.0
  PACKAGE_NAME: distro
  PROTOCOL: ssh
  DISTRO_DISABLE_MFE: true
  CMS_HOST: studio.nutmeg.edunext.link
  LMS_HOST: lms.nutmeg.edunext.link

• run stack strain <local | dev> configure to install plugin distro.
• run stack strain <local | dev> init , this step create the flags. You can see in the logs something like
• Create a superuser tutor <local | dev > createuser --staff --superuser admin admin@edunext.co and import demo_course tutor <local | dev> importdemocourse
• If you verify the Django admin /admin/waffle/flag/ you can see the waffle flags created.
• If you navigate the demo course you see the legacy frontend.

if you configure DISTRO_DISABLE_MFE: false and re-run stack strain <local | dev> init the flags have to be removed.