Bumping k8s dependencies to 1.13

vendor/github.com/imdario/mergo/pr80_test.go

@@ -0,0 +1,18 @@
+package mergo
+
+import (
+	"testing"
+)
+
+type mapInterface map[string]interface{}
+
+func TestMergeMapsEmptyString(t *testing.T) {
+	a := mapInterface{"s": ""}
+	b := mapInterface{"s": "foo"}
+	if err := Merge(&a, b); err != nil {
+		t.Fatal(err)
+	}
+	if a["s"] != "foo" {
+		t.Fatalf("b not merged in properly: a.s.Value(%s) != expected(%s)", a["s"], "foo")
+	}
+}