Peter Piela 15f4560b28 Consolidate code for setting node maintenance state
Replace individual functions for putting-nodes-in and removing-nodes-from
maintenance with a single setMaintenance function. I believe this change
improves maintainability, and is more consistent with the undrlying client
api.

Change-Id: Ic23c72daa873891776fbb7669ccb44bfc6a11f4b
2017-05-31 10:14:21 -04:00
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