IoT-2208: fix IPCA to get device's DMV and PIID

IoT-2208: fix IPCA to get device's DMV and PIID

https://jira.iotivity.org/browse/IOT-2208

IPCA should not use OCPlatform::getPropertyValue() to obtain the data
model versions and protocol independent ID of the remote server.

It is incorrect as they return the values of the local server
(i.e. the app's own device info).

Change-Id: I7e8f64d9c7ebebd1b9bb4ec9290fbbdd1e0fa412
Signed-off-by: Soemin Tjong <stjong@microsoft.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/19645
Tested-by: jenkins-iotivity <jenkins@iotivity.org>
Reviewed-by: Dan Mihai <Daniel.Mihai@microsoft.com>