Do not run integration tests in parallel

At least not until we can control parallelism a little better.

integrationtest/integration_test.go

@@ -170,7 +170,7 @@ func startServiceWithConfigAndCache(t *testing.T, svcConfig as.Config, enableCac
 	// Tell the test runtime that we can run multiple integration tests in
 	// parallel. This just happens to be a convenient call site for all
 	// integration tests.
-	t.Parallel()
+	//t.Parallel()
 
 	ldapsrv := ldaptest.StartServer(t, &ldaptest.Config{
 		Dir:  "../ldaptest",