Fix access to dicussion forum in development mode

The devstack settings from edx-platform set the forum url to
http://edx.devstack.forum:4567 so we need to override this value.

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 Note: Breaking changes between versions are indicated by "💥".
 
+## Unreleased
+
+- [Bugfix] Fix access to dicussion forum in development mode
+
 ## v10.0.9 (2020-07-07)
 
 - [Bugfix] Share grade download settings between the LMS and the CMS

tutor/templates/apps/openedx/settings/lms/development.py

@@ -14,6 +14,7 @@ CMS_ROOT_URL = "http://{}".format(CMS_BASE)
 LOGIN_REDIRECT_WHITELIST.append(CMS_BASE)
 
 FEATURES['ENABLE_COURSEWARE_MICROFRONTEND'] = False
+COMMENTS_SERVICE_URL = "http://{{ FORUM_HOST }}:4567"
 
 LOGGING["loggers"]["oauth2_provider"] = {
     "handlers": ["console"],