Simplify random seed initialization

There is no need to set the time zone as the result does not
depend on it

cmd/kubectl/kubectl.go

@@ -34,7 +34,7 @@ import (
 )
 
 func main() {
-	rand.Seed(time.Now().UTC().UnixNano())
+	rand.Seed(time.Now().UnixNano())
 
 	command := cmd.NewDefaultKubectlCommand()