resource: Add test for ConstructResourceObject with InvalidUri

resource: Add test for ConstructResourceObject with InvalidUri

Added a test case for ConstructResourceTest to simulate the scenario
of Resource creation with uri having of not having "/" as its prefix.

Change-Id: Iadfc60fa67e3f5d0d2653720f5557c4a0e5279dd
Signed-off-by: Ravi Nanjundappa <nravi.n@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/2418
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Erich Keane <erich.keane@intel.com>
Reviewed-by: Jon A. Cruz <jonc@osg.samsung.com>