Don't default OpenShift version for butane config.

ci-operator/step-registry/ipi/conf/debug/kdump-configure-logs/ipi-conf-debug-kdump-configure-logs-commands.sh

@@ -7,11 +7,26 @@ set -o pipefail
 node_role=${APPLY_NODE_ROLE:=worker}
 log_path=${LOG_PATH:="/var/crash"}
 
-openshift_release="4.11.0"
+openshift_release=""
+echo "Trying to extract release image version from RELEASE_IMAGE_LATEST=$RELEASE_IMAGE_LATEST"
 if [[ $(echo $RELEASE_IMAGE_LATEST | grep -o -e "4\.[0-9]\+\.") ]]; then
   openshift_release="$(echo $RELEASE_IMAGE_LATEST | grep -o -e '4\.[0-9]\+\.').0"
 fi
 
+if [[ -z "$openshift_release" ]]; then
+    echo "Unable to determine OpenShift release version from RELEASE_IMAGE_LATEST. Defaulting to JOB_NAME=$JOB_NAME"
+    # This regex first scans for the first pattern that ends with 4.xx, then uses grep to extract just the end of that line
+    # It can be collapsed to a single line with perl (perl -pe  's|^(?:.*?)(4\.[0-9]+)(?:.*)$|\1|'), but
+    # that isn't installed on all of the CI containers. sed was another alternative, but it supports GNU/POSIX regex
+    # which do not include the non-greedy match character '?'
+    openshift_release="$(echo $JOB_NAME | grep -oP -e '^(?:.*?)(4\.[0-9]+)' | grep -oP -e '4\.[0-9]+').0"
+fi
+
+if [[ -z "$openshift_release" ]]; then
+    echo "Unable to determine OpenShift release version from JOB_NAME. Skipping crash kernel configuration."
+    exit 0
+fi
+
 echo "Crash kernel set to ${CRASH_KERNEL_MEMORY}"
 
 echo "Configuring kernel dumps on $node_role nodes"