Deprecated -> DeprecationMessage.

At the Enablement team's request, change from using `Deprecated` to
`DeprecationMessage`, as it's a string value, not a boolean.

helper/schema/data_source_resource_shim.go

@@ -32,7 +32,7 @@ func DataSourceResourceShim(name string, dataSource *Resource) *Resource {
 
 	// FIXME: Link to some further docs either on the website or in the
 	// changelog, once such a thing exists.
-	dataSource.Deprecated = fmt.Sprintf(
+	dataSource.DeprecationMessage = fmt.Sprintf(
 		"using %s as a resource is deprecated; consider using the data source instead",
 		name,
 	)

helper/schema/resource.go

@@ -124,7 +124,7 @@ type Resource struct {
 	Importer *ResourceImporter
 
 	// If non-empty, this string is emitted as a warning during Validate.
-	Deprecated string
+	DeprecationMessage string
 
 	// Timeouts allow users to specify specific time durations in which an
 	// operation should time out, to allow them to extend an action to suit their
@@ -267,8 +267,8 @@ func (r *Resource) Diff(
 func (r *Resource) Validate(c *terraform.ResourceConfig) ([]string, []error) {
 	warns, errs := schemaMap(r.Schema).Validate(c)
 
-	if r.Deprecated != "" {
-		warns = append(warns, r.Deprecated)
+	if r.DeprecationMessage != "" {
+		warns = append(warns, r.DeprecationMessage)
 	}
 
 	return warns, errs

helper/schema/resource_test.go

@@ -859,7 +859,7 @@ func TestResourceInternalValidate(t *testing.T) {
 						Optional: true,
 					},
 				},
-				Deprecated: "This resource has been deprecated.",
+				DeprecationMessage: "This resource has been deprecated.",
 			},
 			true,
 			true,