vendor update for E2E framework

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

vendor/sigs.k8s.io/kustomize/pkg/patch/strategicmerge.go

@@ -0,0 +1,40 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package patch
+
+// StrategicMerge represents a relative path to a
+// stategic merge patch with the format
+// https://github.com/kubernetes/community/blob/master/contributors/devel/strategic-merge-patch.md
+type StrategicMerge string
+
+// Append appends a slice of patch paths to a StrategicMerge slice
+func Append(patches []StrategicMerge, paths ...string) []StrategicMerge {
+	for _, p := range paths {
+		patches = append(patches, StrategicMerge(p))
+	}
+	return patches
+}
+
+// Exist determines if a patch path exists in a slice of StrategicMerge
+func Exist(patches []StrategicMerge, path string) bool {
+	for _, p := range patches {
+		if p == StrategicMerge(path) {
+			return true
+		}
+	}
+	return false
+}