Implement Hetzner for tests and artifact storage

[MyroTk]

• Add Hetzner as an artifact storage option and use it by default (to migrate away from aws).

  • The logs inside the "clickhouse" dir have 30 day retention.
  • The files created by tests in "data" have 1 day retention (as they're not reused after the tests).
  • New log/report browser - https://hel1.your-objectstorage.com/qa-data/index.html# (credentials in 1password).

• Add Hetzner support for s3 suites - s3, tiered_storage, benchmark, and parquet

  • Disable aws runs in scheduled tests
    • Available to run manually, including aws_all option to run all suites with aws

• Minor clean up such as removing trailing whitespaces and removing unused gitlab files

[CarlosFelipeOR]

Why was this line removed? $JOB_REPORT_INDEX is still read in .github/create_and_upload_logs.sh:9 (tfs report results -a "$JOB_REPORT_INDEX"), and that runs in a separate job step — without the $GITHUB_ENV export it arrives empty and the report loses its "Artifacts" section. The uploads themselves are fine, SUITE_REPORT_BUCKET_PATH and SUITE_REPORT_INDEX_URL are still exported.