Reduce update proxy performance

Reduce update proxy performance

Since we try to travel whole scene tree whenever
we fail to found node id, It might make some performance drop.

To avoid these kind of performance issue, let we cache
whole traversal scene tree only one times until scene tree
updated.

Change-Id: Iab4379c9421a18e5fa9ebcb373c7ef1de91022a5
Signed-off-by: Eunki, Hong <eunkiki.hong@samsung.com>