Giacomo Marciani

[Test] Add test to cover self-patching.

[Test] In test_patching_cluster, add capped patching flavours to bound the kernel to Lustre support.

[Test] In test_patching_cluster execute the lustre refresh on Ubuntu the same way we do on RHEL/Rocky, to prevent failures on kernel bump.

[Test] Resolve how the test framework reaches the cluster head node to execute pcluster-diag. It will connect directly when the head node has a public IP, else tunnel through the proxy declared in the cluster config, else through the VPC-stack bastion, else fail with a clear reason.

[Doc] Update attribution document for 3.16.0 assuming Python 3.13.14.

[Test] patching_cluster: restructured the verifications of kernel modules loaded before/after patching to prevent false alarms. Now the test fails the kernel module verification if: 1. a mandatory kernel module is not loaded, OR 2. the module is not loaded (may be lazily loaded), but it exists and fails to load. In this way we prevent the false alarms on kernel modules that legitimately do not exist anymore on the new kernel.

[Test] In test_patching_cluster add possibility to specify the patching flavour to be either minimal (minimal security-only updates, the default) or full (full Os package update).

[Test] Add to test RCA analysis: system messages and system journal. Now when the cluster creation fails, the RCa utility returns the errors from both system messages and system journal.

[Test] Use the latest RHEL9 minor as parent image for testing.

[Test] Fix intermittent failure in test_create_ami by increasing the chances of executing the checks when the image stack still exists. To this aim we made the following changes: 1. execute the export of logs right after build success. 2. execute the build image checks as soon as the build image goes running. 3. reduce the interval between image stack checks from 10min to 5min.