RFR: 8273314: Add tier4 test groups

[Aleksey Shipilev]

On Fri, 3 Sep 2021 18:32:21 GMT, Igor Ignatyev <iignatyev at openjdk.org> wrote:

> > <...> I have excluded `vmTestbase` and `hotspot:tier4`<...>  I have also excluded `applications` from `hotspot:tier4` <...>
> 
> assuming the goal of tier4 is to catch the rest of the tests, I don't think we should exclude `vmTestbase`, `applications` or any other tests from tier4. unless you also want to create tier5 for them.

Apart from practicality of using `tier4`, I think `vmTestbase` and `applications` are separate test suites in their own right. `tier4` is catching all the assorted Hotspot tests that are not part of larger suites. Makes sense?

-------------

PR: https://git.openjdk.java.net/jdk/pull/5357