[ci] upgrade CI test containers from Ubuntu 20.04 to 22.04

[andrew-anyscale]

Upgrades CI test container base images from Ubuntu 20.04 to 22.04 (jammy), including the mandatory clang-12 to clang-14 toolchain upgrade available in 22.04.

• focal → jammy for all base images and wanda configs (base.test, base.gpu, base.cu128, forge wanda)
• clang-12 → clang-14 in base.test, base.gpu, base.build Dockerfiles and install-llvm-binaries.sh
• libncurses5 → libncurses6
• libgl1-mesa-glx → libgl1 (dropped in 22.04)
• netcat → netcat-openbsd (22.04 no longer provides the bare netcat metapackage)
• MongoDB via official repo for jammy (8.0), replacing the obsolete ubuntu package
• Java 8 update-alternatives: 22.04 defaults to Java 11, pin to Java 8 where needed
• test_mongo.py: start mongod directly instead of via service (mongodb-org 8.0 has no SysV init script)
• test_dashboard_profiler.py: skip py-spy --native on Linux (known issue, see [Dashboard] Getting stacktrace from the dashboard triggers "failed to get os threadid" when --native option is used #30566)
• onnx 1.15.0 → 1.16.0 (compatibility with newer environment)
• Simplified Podman doc (20.04 workaround removed)

Topic: ubuntu-22-04-test
Labels: draft

Signed-off-by: andrew andrew@anyscale.com

[andrew-anyscale]

Reviews in this chain:
└#61533 [ci] upgrade CI test containers from Ubuntu 20.04 to 22.04

[andrew-anyscale]

#	head	base	diff	date	summary
0	1dac0b9e	5270e8ce	diff	Mar 5 13:11 PM	19 files changed, 77 insertions(+), 45 deletions(-)
1	2f035d8c	5270e8ce	diff	Mar 5 13:12 PM	0 files changed
2	9de24404	5270e8ce	diff	Mar 5 13:38 PM	3 files changed, 13 insertions(+), 5 deletions(-)
3	4be924b4	5270e8ce	diff	Mar 5 14:01 PM	1 file changed, 3 insertions(+), 3 deletions(-)
4	fb42727f	5270e8ce	diff	Mar 6 9:17 AM	1 file changed, 3 insertions(+)
5	65100c8e	1f3a82ee	diff	Mar 6 12:37 PM	1 file changed, 3 insertions(+)

[gemini-code-assist]

Code Review

This pull request upgrades the CI test containers from Ubuntu 20.04 to 22.04, which is a significant and necessary infrastructure update. The changes across Dockerfiles, configuration files, and test code are mostly correct and well-justified. I have a few suggestions for improvement. First, for better compatibility, I recommend using LLVM binaries specifically built for Ubuntu 22.04. Second, in the documentation, it would be beneficial to retain installation instructions for Podman on Ubuntu 20.04, as it is a widely used LTS release. Lastly, I've suggested a small refactoring in a test file to improve resource management by ensuring a temporary directory is always cleaned up.