Bumping k8s dependencies to 1.13

vendor/github.com/imdario/mergo/issue61_test.go

@@ -0,0 +1,20 @@
+package mergo
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestIssue61MergeNilMap(t *testing.T) {
+	type T struct {
+		I map[string][]string
+	}
+	t1 := T{}
+	t2 := T{I: map[string][]string{"hi": {"there"}}}
+	if err := Merge(&t1, t2); err != nil {
+		t.Fail()
+	}
+	if !reflect.DeepEqual(t2, T{I: map[string][]string{"hi": {"there"}}}) {
+		t.FailNow()
+	}
+}