Fixed unit tests in sahara scenario
Fixed unit tests in sahara scenario

Removed unused mock in unit tests for sahara scenario

Change-Id: I569c16a5bcb658ff32d76b4458132660fc92417d

openstack/sahara-tests,openstack/sahara-tests,openstack/sahara-scenario,openstack/sahara-scenario,openstack/sahara-tests,openstack/sahara-scenario,openstack/sahara-tests