cluster/prodvider: emit crdb certs

This emits short-lived user credentials for a `dev-user` in crdb-waw1
any time someone prodaccesses.

Change-Id: I0266a05c1f02225d762cfd2ca61976af0658639d
diff --git a/cluster/prodvider/service.go b/cluster/prodvider/service.go
index 160f260..19f70ed 100644
--- a/cluster/prodvider/service.go
+++ b/cluster/prodvider/service.go
@@ -81,10 +81,19 @@
 		return nil, status.Error(codes.Unavailable, "could not generate hspki keys")
 	}
 
+	crdbWaw1Keys, err := p.crdbCreds(ctx, username, "waw1")
+	if err != nil {
+		glog.Errorf("crdbCreds(%q): %v", username, err)
+		return nil, status.Error(codes.Unavailable, "could not generate crdb keys")
+	}
+
 	return &pb.AuthenticateResponse{
 		Result:         pb.AuthenticateResponse_RESULT_AUTHENTICATED,
 		KubernetesKeys: kubernetesKeys,
 		HspkiKeys:      hspkiKeys,
+		CrdbKeys: &pb.CockroachDBKeys{
+			Clusters: []*pb.CockroachDBKeys_Cluster{crdbWaw1Keys},
+		},
 	}, nil
 }