Change Upload to Test S3 upload, not real AWS

[gordonkoehn]

Currently, even in testing in the CI, there is an actual S3 upload happening.

This should not be the case.

Let's implement some s3 test framework.

And activate it in the tests.

As well as write unit tests for the s3 functions implemented.

[gordonkoehn]

sr2silo_1  | Traceback (most recent call last):
sr2silo_1  |   File "/app/scripts/vp_transformer.py", line 19, in <module>
sr2silo_1  |     from sr2silo.s3 import compress_bz2, upload_file_to_s3
sr2silo_1  |   File "/app/src/sr2silo/s3.py", line 13, in <module>
sr2silo_1  |     from moto import mock_aws
sr2silo_1  | ModuleNotFoundError: No module named 'moto'
sr2silo_sr2silo_1 exited with code 1
Removing sr2silo_sr2silo_1 ... 
Removing sr2silo_sr2silo_1 ... done
Removing network sr2silo_default

This is in docker test.

It should fail but it does not.

Once it properly fails add moto.

Probably moto is not found as it is installed as a dev dependency.

Not sure if this makes sense.