RFR: 8323515: Create test alias "all" for all test roots [v3]

[Aleksey Shipilev]

On Tue, 16 Jan 2024 08:52:03 GMT, Alan Bateman <alanb at openjdk.org> wrote:

>> Tried not to introduce new `*_all` groups here. `jdk_all` would be the same as `jdk:all`, TBH. But we still can do it for symmetry reasons, see new commit.
>
> "all" looks okay but the comment "Catch-all" suggests something else, shouldn't be "All tests"?

Yeah, we can do "All tests" instead. See new commit.

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PR Review Comment: https://git.openjdk.org/jdk/pull/17422#discussion_r1453113607