Attach extra disk at vda
Attach extra disk at vda

The baremetal vm's root disk actually shows up as sda, so the virtual
second one gets attached at vda, not vdb.  This parameter doesn't
actually seem to matter, but it's safer to be consistent.

dpkshetty/instack-undercloud,bcrochet/instack-undercloud,eprasad/instack-undercloud,bcrochet/instack-undercloud,dmsimard/instack-undercloud,rdo-management/instack-undercloud,eprasad/instack-undercloud,dmsimard/instack-undercloud,dpkshetty/instack-undercloud,rdo-management/instack-undercloud