Add a missing file of cherry-pick from master.

Add a missing file of cherry-pick from master.

RcsResourceObject.java must be merged into 1.0.0-dev from https://gerrit.iotivity.org/gerrit/#/c/3189/2.
The commit was regarding javadoc comments.
But the file was omitted when it was cherry-picked. (https://gerrit.iotivity.org/gerrit/#/c/3337/)

Change-Id: I8baced2588a3779ca73a6e98f1f2ca6c0e14aaa4
Signed-off-by: coderhyme <jhyo.kim@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/3573
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Madan Lanka <lanka.madan@samsung.com>