Modified Scene UnitTest

Modified Scene UnitTest

Scene container is changed to unordered_map in SceneCollection.
Apply the change to 'getAllSceneInstance' logic.

Change-Id: I48916883b115c7eb57cfe63d1ae55d6d2ee1c430
Signed-off-by: ChaJiWon <jw_wonny.cha@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/9205
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Uze Choi <uzchoi@samsung.com>
Tested-by: Uze Choi <uzchoi@samsung.com>
(cherry picked from commit f162cb2234428750943373d939415fb09fd103d8)
Reviewed-on: https://gerrit.iotivity.org/gerrit/10267
Reviewed-by: Madan Lanka <lanka.madan@samsung.com>