Run unit tests after building the stack

Run unit tests after building the stack

Run unit tests after building the C/C++ stacks and unit tests.

Change-Id: I11bf90f95f30815abd272a26d82c97815d4e8bc7
Signed-off-by: Sakthivel Samidurai <sakthivel.samidurai@intel.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/455
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Sashi Penta <sashi.kumar.penta@intel.com>
Reviewed-by: William Dieter <william.r.dieter@intel.com>
Reviewed-by: Sudarshan Prasad <sudarshan.prasad@intel.com>