Remove mox and Stubs from tests/unit/pci/test_manager.py
Remove mox and Stubs from tests/unit/pci/test_manager.py

Progress on bp:remove-mox

Change-Id: Ia219735c8bb96c8e32f1985cef30013d3cab7b3b

cloudbase/nova,jianghuaw/nova,phenoxim/nova,Juniper/nova,cloudbase/nova,sebrandon1/nova,jianghuaw/nova,jianghuaw/nova,rahulunair/nova,rajalokan/nova,mikalstill/nova,gooddata/openstack-nova,BeyondTheClouds/nova,CEG-FYP-OpenStack/scheduler,zhimin711/nova,cernops/nova,alaski/nova,vmturbo/nova,sebrandon1/nova,Juniper/nova,gooddata/openstack-nova,hanlind/nova,rajalokan/nova,mikalstill/nova,hanlind/nova,mikalstill/nova,vmturbo/nova,dims/nova,mahak/nova,alaski/nova,klmitch/nova,CEG-FYP-OpenStack/scheduler,bigswitch/nova,vmturbo/nova,openstack/nova,zhimin711/nova,rahulunair/nova,openstack/nova,gooddata/openstack-nova,rahulunair/nova,bigswitch/nova,rajalokan/nova,gooddata/openstack-nova,cyx1231st/nova,mahak/nova,hanlind/nova,mahak/nova,dims/nova,phenoxim/nova,cyx1231st/nova,NeCTAR-RC/nova,BeyondTheClouds/nova,klmitch/nova,jianghuaw/nova,cernops/nova,cloudbase/nova,sebrandon1/nova,Juniper/nova,vmturbo/nova,BeyondTheClouds/nova,cernops/nova,openstack/nova,klmitch/nova,klmitch/nova,Juniper/nova,NeCTAR-RC/nova,rajalokan/nova