Make sure crashkernel=auto is not used in el9

tests/cern_partitioning/5_grub.sh

@@ -7,6 +7,15 @@ t_Log "Running $0 - Checking default grub parameters"
 t_Log "Looking for crashkernel in /etc/default/grub"
 grep -e 'GRUB_CMDLINE_LINUX=".*crashkernel.*' /etc/default/grub
 t_CheckExitStatus $?
+
+# el9 onwards cannot use crashkernel=auto
+# Ref. https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9-beta/html/managing_monitoring_and_updating_the_kernel/configuring-kdump-on-the-command-line_managing-monitoring-and-updating-the-kernel
+if [ "$centos_ver" -ge 9 ] ; then
+  t_Log "Making sure crashkernel=auto is not in /etc/default/grub"
+  ! grep -e 'GRUB_CMDLINE_LINUX=".*crashkernel=auto.*' /etc/default/grub
+  t_CheckExitStatus $?
+fi
+
 t_Log "Looking for crashkernel in /proc/cmdline"
 grep -e 'crashkernel' /proc/cmdline
 t_CheckExitStatus $?