Add tests for supported kernel conversion

Signed-off-by: Daniel Diblik <ddiblik@redhat.com>

Author: danmyway

plans/tier0.fmf

@@ -117,6 +117,46 @@ adjust+:
                     exclude:
                         - checks-after-conversion/rhel_subman
 
+        /amazon_linux2_supported_kernels:
+            summary+: |
+                RHSM conversion on Amazon Linux 2 kernel 5.10 and 5.15
+            description+: |
+                Two plans set C2R_AL2_TARGET_KERNEL to 5.10 or 5.15; prepare installs that line and reboots.
+                Kernel 4.14 is omitted: the test AMI already boots 4.14, so other tier0 runs cover that line.
+            adjust+:
+              - enabled: false
+                when: distro != amazon2
+                because: The matrix applies only to Amazon Linux 2.
+            prepare+:
+              - name: Install and boot the target Amazon Linux 2 kernel
+                how: shell
+                script: pytest tests/integration/*/destructive/amazon-linux2-supported-kernels/prepare_boot_target_kernel.py
+              - name: Reboot into the selected kernel
+                how: ansible
+                playbook: tests/ansible_collections/roles/reboot/main.yml
+            /kernel_5_4:
+                summary+: Boot into kernel-5.4 then convert
+                environment+:
+                    C2R_AL2_TARGET_KERNEL: "kernel-5.4"
+                discover+:
+                    test+<:
+                        - conversion-method/activation_key_conversion
+            /kernel_5_10:
+                summary+: Boot into kernel-5.10 then convert
+                environment+:
+                    C2R_AL2_TARGET_KERNEL: "kernel-5.10"
+                discover+:
+                    test+<:
+                        - conversion-method/activation_key_conversion
+
+            /kernel_5_15:
+                summary+: Boot into kernel-5.15 then convert
+                environment+:
+                    C2R_AL2_TARGET_KERNEL: "kernel-5.15"
+                discover+:
+                    test+<:
+                        - conversion-method/activation_key_conversion
+
 
         /single_yum_transaction:
             /packages_upgraded_after_conversion:

tests/integration/tier0/destructive/amazon-linux2-supported-kernels/main.fmf

@@ -0,0 +1,7 @@
+summary+: |
+    Amazon Linux 2 supported kernel
+
+description+: |
+    Plans boot into Amazon Linux 2 kernel 5.4, 5.10 or 5.15 (extras); 4.14 is covered by the default
+    test AMI and other tier0 scenarios. Each plan performs a full RHSM conversion with the usual
+    destructive reboot and post-conversion checks.

tests/integration/tier0/destructive/amazon-linux2-supported-kernels/prepare_boot_target_kernel.py

@@ -0,0 +1,16 @@
+#!/usr/bin/env python3
+
+import os
+
+
+def test_upgrade_amzn2_kernel(shell):
+    """
+    tmt prepare step: install the Amazon Linux 2 kernel line from C2R_AL2_TARGET_KERNEL
+    (5.4, 5.10 or 5.15), set GRUB default, and mkconfig. A follow-up ansible reboot applies it.
+    """
+    target_kernel = os.environ.get("C2R_AL2_TARGET_KERNEL")
+
+    assert shell(["amazon-linux-extras", "install", "-y", target_kernel]).returncode == 0
+    vmlinuz = shell("rpm -q --last kernel | head -1 | cut -d ' ' -f1 | sed 's/kernel-/\/boot\/vmlinux-/'").output
+    assert shell(["grubby", "--set-default", vmlinuz]).returncode == 0
+    assert shell(["grub2-mkconfig", "-o", "/boot/grub2/grub.cfg"]).returncode == 0