Allow running in watch mode via chart and use it in integration tests
Here's a quick sketch of what the integration tests for the ingestor would look like, ported from the docker-compose tests to the helm-based tests: https://gitlab.eox.at/vs/vs-deployment/-/blob/main/testing/run_integration_test.sh#L46
For this to work, ingestor must be run in watch mode, for which currently no option exists in the helm chart.
Figure out a way to run the tests, probably either by using watch mode or rewriting the tests.