Fix api interfaces for orchestration resources

Some of the interfaces don't correspond well to the values
expected by the requests and returned by api.
diff --git a/rackspace/orchestration/v1/stackresources/delegate_test.go b/rackspace/orchestration/v1/stackresources/delegate_test.go
index 18e9614..116e44c 100644
--- a/rackspace/orchestration/v1/stackresources/delegate_test.go
+++ b/rackspace/orchestration/v1/stackresources/delegate_test.go
@@ -104,5 +104,5 @@
 	th.AssertNoErr(t, err)
 
 	expected := os.GetTemplateExpected
-	th.AssertDeepEquals(t, expected, actual)
+	th.AssertDeepEquals(t, expected, string(actual))
 }