[IOT-1628] fixed TC failure in the resource discovery in the cloud RD

[IOT-1628] fixed TC failure in the resource discovery in the cloud RD

- According to the latest RD implementation, the resource discovery TC is fixed where the device presence information is stored in the DB in advance

Change-Id: I85c2c848cf3b0a60fa22014faa09e00985fe6688
Signed-off-by: yeonghun.nam <yeonghun.nam@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/15015
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: jung seungho <shonest.jung@samsung.com>
Reviewed-by: hwa.chung <hwa.chung@samsung.com>
Reviewed-by: Jee Hyeok Kim <jihyeok13.kim@samsung.com>