Fix main tests (#2670)

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>

cluster/cluster_test.go

@@ -92,7 +92,7 @@ func testJoinLeave(t *testing.T) {
 	)
 	require.NoError(t, err)
 	go p2.Settle(context.Background(), 0*time.Second)
-	p2.WaitReady()
+	require.NoError(t, p2.WaitReady(context.Background()))
 
 	require.Equal(t, 2, p.ClusterSize())
 	p2.Leave(0 * time.Second)