Add test for Unprivileged OpenJ9 CRIU

[LongyuZhang]

Unprivileged OpenJ9 CRIU Support blog: https://blog.openj9.org/2022/09/29/unprivileged-openj9-criu-support/
Test scenario:

• start container with privileged
• create checkpoint
• upload test image
• start container with unprivileged (on different machines)
• perform unprivileged CRIU restore

@tobi could you confirm the test scenario? Is this test limited on Ubuntu 22 only? Do we need to run podman?

FYI @llxia @smlambert

[LongyuZhang]

Discussed this issue in the Criu meeting, currently the docker CAP_CHECKPOINT_RESTORE capability (mentioned in above blog) still hasn't been updated. We will wait for docker update on Jenkins machines then.

Currently, the weekly CRIU_Image_Upload (hyc_jenkins/job/CRIU_Image_Upload/) pipeline has been updated to build criu from source code with unprivileged support to facilitate local testing, so the images can be directly pulled to local machine ( with updated docker version) for unprivileged test.