tree 79c84c675a7e7872af7a8ea10e2973678d62a271
parent b881e0c4708560843a5c0fbb3f79683abd04774e
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