Merge branch 'staging' into redis-statuses

.gitlab-ci.yml

core/registrar/backend.py

docker-compose.dem.dev.yml

docker-compose.dem.ops.yml

docker-compose.dem.yml

docker-compose.emg.dev.yml

docker-compose.emg.ops.yml

docker-compose.emg.yml

docker-compose.vhr18.dev.yml

docker-compose.vhr18.ops.yml

docker-compose.vhr18.yml

sftp/Dockerfile

sftp/entrypoint.sh

testing/preprocessor_test.py

testing/renderer_test.py

testing/tpzonlineitem.xml