ClusterManager.RemoveNode have sync version

[eiriktsarpalis]

Non-blocking nature of attach results in races where runtime is accessible during intermediate states.

[eiriktsarpalis]

cf https://github.com/nessos/MBrace/blob/master/src/MBrace.Runtime.Cluster/MBraceNode.fs#L415

[anirothan]

There is an AddNodeSync message for ClusterManager that you can use.

[eiriktsarpalis]

Ok, updated the issue to RemoveNode which seems to be missing an equivalent version.