Propose to move system tests from OpenJ9 to AQAvit

[llxia]

When system tests were initially open-sourced (in 2017), the STF framework did not support running against different JVM implementations. As a result, system tests were split into 3 system test repos (below). Two repos are under Adoptium and one repo is under Openj9.

• https://github.com/adoptium/STF - system Test Framework
• https://github.com/adoptium/aqa-systemtest - system verification tests for hotspot
• https://github.com/eclipse-openj9/openj9-systemtest - system verification tests for OpenJ9

The AQA core team has been responsible for maintaining these three system test repositories, which involve updating tests and tagging each repository for every AQAvit release. With the capability to run tests against various implementations and versions using TKG, there's no longer a need to segregate the system test repositories. Consolidating all system tests into a single repository will simplify usage and maintenance.

To start, I would like to propose moving the system test repo https://github.com/eclipse-openj9/openj9-systemtest from OpenJ9 to the AQAvit project.

If you agree with moving system tests from OpenJ9 to the AQAvit project, could you please 👍 in this issue? If further information is needed, please do not hesitate to ask. If I missed anyone, please feel free to tag them. Thanks

FYI @mstoodle @pshipton @tajila @0xdaryl @smlambert