Adds a set of 'reconnecting' nodes, which are not yet considered 'down', just temporarily lost connection.
Don't send CLUSTER SLOTS to any node which is reconnecting or has a full command queue.
Also send CLUSTER SLOTS to a random node, since we may send multiple async CLUSTER SLOTS before we get a reply for the first one, so we don't want the same node over and over.
Adds a set of 'reconnecting' nodes, which are not yet considered 'down', just temporarily lost connection.
Don't send CLUSTER SLOTS to any node which is reconnecting or has a full command queue.
Also send CLUSTER SLOTS to a random node, since we may send multiple async CLUSTER SLOTS before we get a reply for the first one, so we don't want the same node over and over.