scrubber: allow restricting find_garbage to a partial tenant id prefix

[arpad-m]

Adds support to the find_garbage command to restrict itself to a partial tenant ID prefix, say a, and then it only traverses tenants with IDs starting with a. One can now pass the --tenant-id-prefix parameter.

That way, one can shard the find_garbage command and make it run in parallel.

The PR also does a change of how remote_storage first removes trailing /s, only to then add them in the listing function. It turns out that this isn't neccessary and it prevents the prefix functionality from working. S3 doesn't do this either.

[github-actions[bot]]

5517 tests run: 5291 passed, 0 failed, 226 skipped (full report)

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Code coverage* (full report)

• functions: 31.4% (7936 of 25296 functions)
• lines: 49.3% (62996 of 127737 lines)

* collected from Rust tests only

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_{The comment gets automatically updated with the latest test results
f5f94ec0366b63fd2cbbe02edc2087dbd893d04d at 2024-11-20T05:37:23.152Z :recycle:}