cmd/swarm: disable TestCLISwarmUp because it's flaky

cmd/swarm/upload_test.go

@@ -27,6 +27,8 @@ import (
 // TestCLISwarmUp tests that running 'swarm up' makes the resulting file
 // available from all nodes via the HTTP API
 func TestCLISwarmUp(t *testing.T) {
+	t.Skip("flaky test")
+
 	// start 3 node cluster
 	t.Log("starting 3 node cluster")
 	cluster := newTestCluster(t, 3)