Merge pull request #71170 from atlassian/rand-cleanup2

Cleanup math/rand package usage

test/e2e/framework/util.go

@@ -1344,8 +1344,7 @@ func LoadClientset() (*clientset.Clientset, error) {
 //       need to use such a function and can instead
 //       use the UUID utility function.
 func RandomSuffix() string {
-	r := rand.New(rand.NewSource(time.Now().UnixNano()))
-	return strconv.Itoa(r.Int() % 10000)
+	return strconv.Itoa(rand.Intn(10000))
 }
 
 // ExpectEqual expects the specified two are the same, otherwise an exception raises