Added RCSRepresentation class and get function with params in PrimitiveResource.

Added RCSRepresentation class and get function with params in PrimitiveResource.

The class is to represesnt resource information in a form of hierarchy.
It replaces ResponseStatement which was a class used internally.
Addtionially broken tests in PrimitiveResource related with Set operation are fixed.

Change-Id: I0b1bcc97b0b210a5a2c3da6e6219de1ff3fc727c
Signed-off-by: coderhyme <jhyo.kim@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/4871
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Uze Choi <uzchoi@samsung.com>