Merge pull request #26763 from edx/ddumesnil/segment-logout-aa-513

AA-513: Add segment event for logout

common/djangoapps/student/models.py

@@ -2555,9 +2555,13 @@ def log_successful_logout(sender, request, user, **kwargs):  # lint-amnesty, pyl
     """Handler to log when logouts have occurred successfully."""
     if hasattr(request, 'user'):
         if settings.FEATURES['SQUELCH_PII_IN_LOGS']:
-            AUDIT_LOG.info(u"Logout - user.id: {0}".format(request.user.id))  # pylint: disable=logging-format-interpolation
+            AUDIT_LOG.info('Logout - user.id: {0}'.format(request.user.id))  # pylint: disable=logging-format-interpolation
         else:
-            AUDIT_LOG.info(u"Logout - {0}".format(request.user))  # pylint: disable=logging-format-interpolation
+            AUDIT_LOG.info('Logout - {0}'.format(request.user))  # pylint: disable=logging-format-interpolation
+        tracker.emit('edx.bi.user.account.logout', {
+            'referrer': request.META.get('HTTP_REFERER'),
+            'user_id': request.user.id,
+        })
 
 
 @receiver(user_logged_in)