pageserver: require stripe size

[erikgrinaker]

Problem

In #12217, we began passing the stripe size in reattach responses, and persisting it in the on-disk state. This is necessary to ensure the storage controller and Pageserver have a consistent view of the intended stripe size of unsharded tenants, which will be used for splits that do not specify a stripe size. However, for backwards compatibility, these stripe sizes were optional.

Summary of changes

Make the stripe sizes required for reattach responses and on-disk location configs. These will always be provided by the previous (current) release.

[github-actions[bot]]

8481 tests run: 7899 passed, 0 failed, 582 skipped (full report)

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Flaky tests (1)

Postgres 17

• test_tenant_delete_scrubber: release-arm64-without-lfc

Code coverage* (full report)

• functions: 32.1% (9022 of 28110 functions)
• lines: 48.4% (80203 of 165765 lines)

* collected from Rust tests only

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_{The comment gets automatically updated with the latest test results
05e759a712417f97672fb589f9ab65d7e225810b at 2025-06-16T14:02:28.034Z :recycle:}