BUG 1582 - PUT fails validate outer object name

validateTopLevelNodeName method was added.

Change-Id: I6f48ba9350b31d98f765fcb4afb367b8435b4cbd
Signed-off-by: Jozef Gloncak <jgloncak@cisco.com>
Merge "BUG 1582 - PUT fails validate outer object name"