Fix tests

cmd/tiller/probes_test.go

@@ -10,7 +10,7 @@ func TestProbesServer(t *testing.T) {
 	mux := newProbesMux()
 	srv := httptest.NewServer(mux)
 	defer srv.Close()
-	resp, err := http.Get("/readiness")
+	resp, err := http.Get(srv.URL + "/readiness")
 	if err != nil {
 		t.Fatalf("GET /readiness returned an error (%s)", err)
 	}
@@ -18,7 +18,7 @@ func TestProbesServer(t *testing.T) {
 		t.Fatalf("GET /readiness returned status code %d, expected %d", resp.StatusCode, http.StatusOK)
 	}
 
-	resp, err = http.Get("/liveness")
+	resp, err = http.Get(srv.URL + "/liveness")
 	if err != nil {
 		t.Fatalf("GET /liveness returned an error (%s)", err)
 	}