[IOT-1208] fix for jira issue

[IOT-1208] fix for jira issue

It works as expected, server sample set sensor interface as its default interface. And the sensor interface does not support set request by the core spec.

I feel server and client sample should work as pair, which means sample server needs to support set request. So sample server is modified.

Change-Id: Ib2ff696c18ba5449300dff833d2dfdc7e2d7c8bb
Signed-off-by: coderhyme <jhyo.kim@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/6209
Reviewed-by: Uze Choi <uzchoi@samsung.com>
Tested-by: Uze Choi <uzchoi@samsung.com>