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/github.com/google/go-cmp/cmp/path.go

@@ -1,6 +1,6 @@
 // Copyright 2017, The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE.md file.
+// license that can be found in the LICENSE file.
 
 package cmp
 
@@ -315,7 +315,7 @@ func (tf Transform) Option() Option { return tf.trans }
 // pops the address from the stack. Thus, when traversing into a pointer from
 // reflect.Ptr, reflect.Slice element, or reflect.Map, we can detect cycles
 // by checking whether the pointer has already been visited. The cycle detection
-// uses a seperate stack for the x and y values.
+// uses a separate stack for the x and y values.
 //
 // If a cycle is detected we need to determine whether the two pointers
 // should be considered equal. The definition of equality chosen by Equal