[jdk22u] RFR: 8323515: Create test alias "all" for all test roots

[Aleksey Shipilev]

On Thu, 22 Feb 2024 17:19:58 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Improves JDK 22u testability by allowing to run all tests at once. Test groups sanity is going to be tested with GHA.

This is chain of two commits, but both commits are clean.

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PR Comment: https://git.openjdk.org/jdk22u/pull/65#issuecomment-1959911523