e2e: skip if mg version less than 4.22

We don't want this test to run on older version because
we don't have the selinux data which in older MG, which means
the test is gonna failed.

Signed-off-by: Talor Itzhak <titzhak@redhat.com>

Author: Tal-or

test/e2e/must-gather/must_gather_test.go

@@ -30,6 +30,7 @@ import (
 	"github.com/opencontainers/selinux/go-selinux"
 
 	corev1 "k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/util/version"
 	"k8s.io/klog/v2"
 
 	"sigs.k8s.io/yaml"
@@ -190,6 +191,8 @@ var _ = Describe("[must-gather] NRO data collected", func() {
 		})
 
 		It("check SELinux data files have been collected", func(ctx context.Context) {
+			minVersion := version.MustParse("4.21")
+
 			destDirContent, err := os.ReadDir(destDir)
 			Expect(err).NotTo(HaveOccurred(), "unable to read contents from destDir:%s. error: %w", destDir, err)
 
@@ -199,6 +202,16 @@ var _ = Describe("[must-gather] NRO data collected", func() {
 				}
 				mgContentFolder := filepath.Join(destDir, content.Name())
 
+				mgVersionData, err := os.ReadFile(filepath.Join(mgContentFolder, "version"))
+				Expect(err).ToNot(HaveOccurred(), "failed to read must-gather version file")
+				mgVersionLines := strings.Split(strings.TrimSpace(string(mgVersionData)), "\n")
+				Expect(len(mgVersionLines)).To(BeNumerically(">=", 2), "must-gather version file should have at least 2 lines")
+				mgVersion, err := version.Parse(mgVersionLines[1])
+				Expect(err).ToNot(HaveOccurred(), "failed to parse must-gather version: %s", mgVersionLines[1])
+				if mgVersion.LessThan(minVersion) {
+					Skip(fmt.Sprintf("SELinux data collection is only supported on must-gather version %s or newer, got %s", minVersion, mgVersion))
+				}
+
 				By(fmt.Sprintf("Checking Folder: %q", mgContentFolder))
 				By("Looking for SELinux info directory")