Add unit test for services api
Add unit test for services api

Change-Id: I0a4cec43c76d64191c5e962674ba31b5d6a834a3
Signed-off-by: helei <d1eb396541b5ab239cf976497709b49572c3bb79@cmss.chinamobile.com>

openstack/smaug,openstack/smaug