core: disabling the flaky modules.TestChildNoRegistration() test

BUG: https://github.com/veyron/release-issues/issues/1205
Change-Id: I46bc345872e7ffc2e0b43bacbf50deb94b183a62
diff --git a/lib/modules/modules_test.go b/lib/modules/modules_test.go
index 1d95fe3..b647654 100644
--- a/lib/modules/modules_test.go
+++ b/lib/modules/modules_test.go
@@ -297,6 +297,10 @@
 }
 
 func TestChildNoRegistration(t *testing.T) {
+	// TODO(jsimsa): Re-enable this test when it is no longer flaky.
+	// https://github.com/veyron/release-issues/issues/1205
+	t.SkipNow()
+
 	ctx, shutdown := testutil.InitForTest()
 	defer shutdown()