Andrew Rynhard c9732458c1 fix: verify that all etcd members are running before upgrading
This verifies that all etcd members are running before performing an
upgrade. Without this we run the risk of destroying the etcd cluster.

Signed-off-by: Andrew Rynhard <andrew@andrewrynhard.com>
2019-11-04 18:17:13 -08:00
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