labs: actually call MySQL in setup_openstackdb
labs: actually call MySQL in setup_openstackdb

The code in setup_openstackdb has been left in debug mode, which means
it just echoed the mysql commands rather than executing them.

This patches fixes that.

Change-Id: I261a65a9c0ff147803649aeb750f397826730934

harrisonfeng/training-guides,Nabs007/training-guides,Nabs007/training-guides,harrisonfeng/training-guides,openstack/training-guides,Nabs007/training-guides,harrisonfeng/training-guides,openstack/training-guides