OpenJDK package - JTREG 7.1

[Vladimir Petko <vladimir.petko@canonical.com>]

Dear Maintainers,

In order to regression test OpenJDK 20 onwards JTREG 7.1 is required
[1]. It is already used by the Eclipse Adoptium project [2] to test
OpenJDK 20.  We still need jtreg6 and jtreg packages for older
versions of OpenJDK. I was wondering if it would be acceptable for me
to file an intent to package proposal for JTREG7 and package it?

Best Regards,
 Vladimir.

[1] https://mail.openjdk.org/pipermail/jdk-dev/2022-December/007229.html
[2] https://github.com/adoptium/aqa-tests/issues/4190