*: update kube vendor to v1.7.4

Signed-off-by: Antonio Murdaca <runcom@redhat.com>

vendor/k8s.io/kubernetes/pkg/api/util/group_version.go

@@ -0,0 +1,48 @@
+/*
+Copyright 2015 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.
+*/
+
+// TODO: This GetVersion/GetGroup arrangement is temporary and will be replaced
+// with a GroupAndVersion type.
+package util
+
+import "strings"
+
+func GetVersion(groupVersion string) string {
+	s := strings.Split(groupVersion, "/")
+	if len(s) != 2 {
+		// e.g. return "v1" for groupVersion="v1"
+		return s[len(s)-1]
+	}
+	return s[1]
+}
+
+func GetGroup(groupVersion string) string {
+	s := strings.Split(groupVersion, "/")
+	if len(s) == 1 {
+		// e.g. return "" for groupVersion="v1"
+		return ""
+	}
+	return s[0]
+}
+
+// GetGroupVersion returns the "group/version". It returns "version" is if group
+// is empty. It returns "group/" if version is empty.
+func GetGroupVersion(group, version string) string {
+	if len(group) == 0 {
+		return version
+	}
+	return group + "/" + version
+}