Initialize klog explicitly

Updating go-template-utils causes the klog flags to not be initialized
implicitly.

Signed-off-by: mprahl <mprahl@users.noreply.github.com>
(cherry picked from commit dc1d906)

main.go

@@ -59,6 +59,8 @@ func init() {
 }
 
 func main() {
+ klog.InitFlags(nil)
+
  zflags := zaputil.FlagConfig{
  LevelName: "log-level",
  EncoderName: "log-encoder",