move variable to correct place

playbooks/edx-east/video_pipeline.yml

@@ -5,7 +5,6 @@
   vars:
     ENABLE_NEWRELIC: False
     migrate_db: 'yes'
-    edx_django_service_use_python3: false
   roles:
     - role: nginx
       nginx_default_sites:

playbooks/roles/video_pipeline/meta/main.yml

@@ -48,3 +48,4 @@ dependencies:
     edx_django_service_social_auth_redirect_is_https: '{{ VIDEO_PIPELINE_SOCIAL_AUTH_REDIRECT_IS_HTTPS }}'
     edx_django_service_extra_apps: '{{ VIDEO_PIPELINE_EXTRA_APPS }}'
     edx_django_service_automated_users: '{{ VIDEO_PIPELINE_AUTOMATED_USERS }}'
+    edx_django_service_use_python3: false