Rename PCS to Virtuozzo in error message
Rename PCS to Virtuozzo in error message

"PCS" means Parallels Cloud Server and this product no longer exists.
Now it's renamed to Virtuozzo. We should use "Virtuozzo" instead of PCS.

Change-Id: Icff85e8abf524aa8ec61593aa9841d552280f826

Juniper/nova,jianghuaw/nova,mikalstill/nova,vmturbo/nova,jianghuaw/nova,Juniper/nova,klmitch/nova,rajalokan/nova,hanlind/nova,vmturbo/nova,mahak/nova,klmitch/nova,phenoxim/nova,jianghuaw/nova,openstack/nova,rajalokan/nova,rajalokan/nova,rajalokan/nova,mahak/nova,vmturbo/nova,klmitch/nova,phenoxim/nova,jianghuaw/nova,mikalstill/nova,openstack/nova,klmitch/nova,rahulunair/nova,mahak/nova,hanlind/nova,rahulunair/nova,rahulunair/nova,Juniper/nova,mikalstill/nova,openstack/nova,Juniper/nova,gooddata/openstack-nova,gooddata/openstack-nova,gooddata/openstack-nova,hanlind/nova,vmturbo/nova,gooddata/openstack-nova