Add unit tests for libluna-service2

Open-webOS-DCO-1.0-Signed-off-by: Kari Lehikko <kari.lehikko@palm.com>

Change-Id: Ia5a2e8334603d7b6d28fc6c1c18d95b4e659a964
Open-webOS-DCO-1.0-Signed-off-by: Keith Derrick <keith.derrick@palm.com>