Fix v3 list service instances test

* test failed two times in a row because 3 instances were returned, but only 2 expected
* given the current test setup (space is shared between different tests), we cannot guarantee that exactly 2 instances are returned -> use contain matcher to relax assertion

v3/service_instances.go

@@ -78,6 +78,6 @@ var _ = V3Describe("service instances", func() {
 		err := json.Unmarshal(listService.Out.Contents(), &res)
 		Expect(err).To(BeNil())
 
-		Expect(res.Resources).To(ConsistOf(expectedResources))
+		Expect(res.Resources).To(ContainElements(expectedResources))
 	})
 })