Adding unit test for connectivity-abstraction work.

Adding unit test for connectivity-abstraction work.

Simple addition of unit test for adding cases related to the
connectivity-abstraction work. Utilized in subsequent commits.

Change-Id: Iee4d688ff78bcb358a4d403e32b81f5fdc3bd060
Signed-off-by: Jon A. Cruz <jonc@osg.samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/474
Reviewed-by: Joseph Morrow <joseph.l.morrow@intel.com>
Reviewed-by: Sakthivel Samidurai <sakthivel.samidurai@intel.com>
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Erich Keane <erich.keane@intel.com>
Reviewed-by: Ashok Babu Channa <ashok.channa@samsung.com>
Reviewed-by: Patrick Lankswert <patrick.lankswert@intel.com>