Use apiextension v1

- upgrade from apiextension v1beta1 to v1
 - generate yaml manifest for crd intead of applying it at runtime
  - users will have to apply the manifest with kubectl
 - kg and kgctl log an error if the crd is not present
 - now validation should actually work

Signed-off-by: leonnicolas <leonloechner@gmx.de>

vendor/sigs.k8s.io/controller-tools/pkg/version/version.go

@@ -0,0 +1,49 @@
+/*
+Copyright 2019 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 version
+
+import (
+	"fmt"
+	"runtime/debug"
+)
+
+// Version returns the version of the main module
+func Version() string {
+	info, ok := debug.ReadBuildInfo()
+	if !ok {
+		// binary has not been built with module support
+		return "(unknown)"
+	}
+	return info.Main.Version
+}
+
+// Print prints the main module version on stdout.
+//
+// Print will display either:
+//
+// - "Version: v0.2.1" when the program has been compiled with:
+//
+//   $ go get github.com/controller-tools/cmd/controller-gen@v0.2.1
+//
+//   Note: go modules requires the usage of semver compatible tags starting with
+//        'v' to have nice human-readable versions.
+//
+// - "Version: (devel)" when the program is compiled from a local git checkout.
+//
+// - "Version: (unknown)" when not using go modules.
+func Print() {
+	fmt.Printf("Version: %s\n", Version())
+}