ci: Skip composefs tests on CentOS 9

On CentOS 9, composefs installation fails with EUCLEAN. Skipping the
tests until we figure it out

Avoid accessing status.booted.composefs.bootloader outside the composefs
path in `test-install-outside-container`

Signed-off-by: Pragyan Poudyal <pragyanpoudyal41999@gmail.com>

Author: Johan-Liebert1

.github/workflows/ci.yml

@@ -166,6 +166,12 @@ jobs:
           # centos-9 UKI is experimental/broken (https://github.com/bootc-dev/bootc/issues/1812)
           - test_os: centos-9
             variant: composefs-sealeduki-sdboot
+          # centos-9 fails with EUCLEAN (https://github.com/bootc-dev/bootc/issues/1812)
+          # See: https://github.com/bootc-dev/bcvk/pull/204
+          - test_os: centos-9
+            variant: composefs-sdboot
+          - test_os: centos-9
+            variant: composefs-grub
 
     runs-on: ubuntu-24.04
 

tmt/tests/booted/test-install-outside-container.nu

@@ -31,10 +31,9 @@ umount /var/mnt
 # And using systemd-run here breaks our install_t so we disable SELinux enforcement
 setenforce 0
 
-let st = bootc status --json | from json
-let bootloader = ($st.status.booted.composefs.bootloader | str downcase)
-
 let install_cmd = if (tap is_composefs) {
+    let st = bootc status --json | from json
+    let bootloader = ($st.status.booted.composefs.bootloader | str downcase)
     $"bootc install to-disk --disable-selinux --via-loopback --composefs-backend --bootloader=($bootloader) --filesystem ext4 --source-imgref ($target_image) ./disk.img"
 } else {
     $"bootc install to-disk --disable-selinux --via-loopback --filesystem xfs --source-imgref ($target_image) ./disk.img"