Adopt changes to Read and Diff

1. Return resource inputs as well as resource state from Read()
2. Return a list of properties that changed from Diff()

We implement the former by reading the last applied configuration
from the `kubectl.kubernetes.io/last-applied-configuration`
annotation in the live object state. If this key is not present, no
inputs are populated and the old inputs are retained. These changes
also update the provider to set this field during `Create` and
`Update`.

We implement the latter by scanning the JSON diff and recording the
names of the top-level properties that changed. The engine uses this
information to filter diffs to only those that are semantically
meaningful.

These changes required a couple of bugfixes:
- Old names are only adopted if the old resource was auto-named. This
  ensures that a name must be specified when importing a resource that
  was not autonamed.
- URN to GVK conversion was fixed for resources in the "core" group.
  These resources have no group part in the GVK. Parsing was also
  simplified through the use of pulumi/pulumi's token manipulation
  functions.
- When reading a resource, the GVK for the resource to read is now
  pulled from the URN if it is absent from the inputs.

CHANGELOG.md

@@ -251,7 +251,8 @@ As such, we are rev'ing the minor version of the package from 0.16 to 0.17.  Rec
 
 ### Improvements
 
--   None
+- The Kubernetes provider now supports the internal features necessary for the Pulumi engine to detect diffs between
+  the actual and desired state of a resource after a `pulumi refresh` (https://github.com/pulumi/pulumi-kubernetes/pull/477)
 
 ### Bug fixes
 

go.mod

@@ -3,11 +3,13 @@ module github.com/pulumi/pulumi-kubernetes
 go 1.12
 
 require (
-	contrib.go.opencensus.io/exporter/ocagent v0.4.12 // indirect
-	github.com/Azure/go-autorest v12.0.0+incompatible // indirect
+	github.com/Azure/azure-sdk-for-go v30.1.0+incompatible // indirect
+	github.com/Azure/go-autorest v12.1.0+incompatible // indirect
+	github.com/Azure/go-autorest/autorest v0.2.0 // indirect
 	github.com/ahmetb/go-linq v3.0.0+incompatible
 	github.com/cbroglie/mustache v1.0.1
 	github.com/evanphx/json-patch v4.1.0+incompatible
+	github.com/gogo/protobuf v1.2.1 // indirect
 	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
 	github.com/golang/protobuf v1.3.1
 	github.com/google/gofuzz v1.0.0 // indirect
@@ -19,19 +21,23 @@ require (
 	github.com/mitchellh/go-wordwrap v1.0.0
 	github.com/pkg/errors v0.8.1
 	github.com/pulumi/pulumi v0.17.15
-	github.com/stretchr/testify v1.2.2
+	github.com/stretchr/testify v1.3.0
 	google.golang.org/grpc v1.20.1
+	gopkg.in/inf.v0 v0.9.1 // indirect
 	k8s.io/api v0.0.0-20190313235455-40a48860b5ab
 	k8s.io/apimachinery v0.0.0-20190313205120-d7deff9243b1
 	k8s.io/client-go v11.0.0+incompatible
 	k8s.io/klog v0.3.0 // indirect
 	k8s.io/kube-openapi v0.0.0-20190418160015-6b3d3b2d5666
 	k8s.io/kubernetes v1.14.1
 	k8s.io/utils v0.0.0-20190308190857-21c4ce38f2a7 // indirect
+	sigs.k8s.io/yaml v1.1.0 // indirect
 )
 
 replace (
 	github.com/Nvveen/Gotty => github.com/ijc25/Gotty v0.0.0-20170406111628-a8b993ba6abd
 	github.com/golang/glog => github.com/pulumi/glog v0.0.0-20180820174630-7eaa6ffb71e4
 	github.com/grpc/grpc-go => google.golang.org/grpc v1.20.1
 )
+
+replace github.com/pulumi/pulumi => ../pulumi