Support round-trip serialization of CRDs

[stan-sz]

Currently, the Yaml deserializer is configured to convert all property types to strings. After aaubry/YamlDotNet#699, it is now possible to deserialize bools and decimals with their types.

E.g.

apiVersion: foo.bar/v1alpha
kind: Foo
metadata:
  name: foo
  namespace: ns
spec:
  bool: false
  byte: 123
  float: 12.3

A call to KubernetesYaml.Deserialize and KubernetesYaml.Serialize will emit:

apiVersion: foo.bar/v1alpha
kind: Foo
metadata:
  name: foo
  namespace: ns
spec:
  bool: "false"
  byte: "123"
  float: "12.3"