Fix issues of RCSResourceObject

Fix issues of RCSResourceObject

Fix data race for handlers with shared_ptr which has guaranteed atomic operations for setting and loading.
LockGuard's destructor is now noexcept(false) and it will emit an exception if and only if the destruction is not caused by stack unwinding.
Some minor issues of the test are fixed.

Change-Id: I12ccb6adb4849642d266f7af5b1e28a2f6d35f83
Signed-off-by: coderhyme <jhyo.kim@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/3929
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Habib Virji <habib.virji@samsung.com>