tree d170ab49aede4ab6517707528a5c1c57eec2aa6c
parent 95c3ee5879487e477c828d7ea32a653a480a96e8
author Hyunsun Moon <hyunsun.moon@gmail.com> 1457397437 -0800
committer Gerrit Code Review <gerrit@onlab.us> 1457414660 +0000

CORD-562 Don't allow nodes with duplicate hostname

And update existing node if newly added node has the same hostname with
existing node.

Change-Id: Ifebbf4129df4f742e16b9a25be619dd90e0745ff