As a user of Airflow I want to be sure that DAGs that use submodules are seamlessly updated and registered with Airflow via gitsync. This covers the following:
### Tasks
- [ ] Check that DAGs are consistent i.e. that the state when the DAG is started is the same despite subsequent syncs while the DAG is still running
- [ ] Check that "new" submodules are correctly loaded/registered
Description
As a user of Airflow I want to be sure that DAGs that use submodules are seamlessly updated and registered with Airflow via gitsync. This covers the following: