coreos/etcd — pull request #881 by unihorn (2014-07-08 15:29:38+00:00)
Title: standby server: save Running info correctly

Running should be true when Start, and set to false when switching to
the other mode.

The original code keeps Running as true if server was standby mode before.
The bug causes the following problem:
If a node switched to peer mode from standby mode, it will goes into standby mode when restart. If all nodes have the same case, full down/up will fail.