test(e2e): introduce e2e tests for S3 integration

[jkuri]

Hi,

I made e2e tests for S3 integration, you can try running it with:

poetry run pytest -v -s e2e/

The tests include;

• creating bucket on MinIO
• uploading file to goosebit and checking if it exists on S3
• run software update on device with swupdate installed

[b-rowan]

Wow. This looks amazing, I'm not even sure I'm fully qualified to review this. Only real question I have is if it would make sense to move this to e2e/s3/ or something like that, since this is testing with an S3 bucket instead of local filesystem storage, but that's likely unimportant.

[jkuri]

Yes, in our company we will be batch updating > 1k remote applicances using goosebit with s3 integration and we need to be sure that it works, that's why I put some effort into e2e tests.

I moved files to e2e/s3 as you suggested as additional e2e tests may come in the future.