Merge pull request #1550 from edx/han/TRACKING_SEGEMENTIO

TRACKING_SEGMENTIO_WEBHOOK_SECRET

playbooks/roles/edxapp/defaults/main.yml

@@ -255,6 +255,7 @@ EDXAPP_PEARSON_TEST_PASSWORD: ""
 EDXAPP_SEGMENT_IO_LMS: false
 EDXAPP_SEGMENT_IO_LMS_KEY: ""
 EDXAPP_OPTIMIZELY_PROJECT_ID: "None"
+EDXAPP_TRACKING_SEGMENTIO_WEBHOOK_SECRET: ""
 # For the CMS
 EDXAPP_SEGMENT_IO_KEY: ""
 EDXAPP_SEGMENT_IO: false
@@ -608,6 +609,7 @@ generic_env_config:  &edxapp_generic_env
   VIRTUAL_UNIVERSITIES: $EDXAPP_VIRTUAL_UNIVERSITIES
   SUBDOMAIN_BRANDING: $EDXAPP_SUBDOMAIN_BRANDING
   REGISTRATION_EXTRA_FIELDS: $EDXAPP_REGISTRATION_EXTRA_FIELDS
+  TRACKING_SEGMENTIO_WEBHOOK_SECRET: $EDXAPP_TRACKING_SEGMENTIO_WEBHOOK_SECRET
 
 lms_auth_config:
   <<: *edxapp_generic_auth