Multiple connections over one cluster object causes issues

[phutchins]

I'm seeing an issue where when I create a cluster object and call cluster.run on it twice in parallel, the callback does not get called correctly and the process never finishes even though the command was run on the host successfully. This may not be the intended use of this plugin but it would be nice if this was supported. I've been able to get around it by creating another cluster object containing the same host and calling those in parallel. I'd be glad to provide more clarification and an example of exactly what I'm referring to if this is not clear enough... Thanks!