Be able to add larger datasets that are not meant to be tested

[pchtsp]

Is your feature request related to a problem? Please describe.
The tests cases in the apps are always very small because they need to be tested in the unit tests. I'd like to be able to upload test cases that can be used for demos and that take time to solve. Also the reports are prettier when there's more data.

Describe the solution you'd like
I propose to add an optional property to the datasets that is a flag that says if the dataset should be tested. By default it's tested unless there's a flag with a false value.

Describe alternatives you've considered
Not uploading large datasets to the app.

Additional context
Other issues may appear such as the way we currently store these datasets in airflow. Maybe we could find better ways to store these datasets (bucket, etc.) that doesn't rely on the airflow variables.