Windows batch scripts: Search for VBoxManage on drive D:
Windows batch scripts: Search for VBoxManage on drive D:

Some Windows machines come with an operating system disk (often a small
SSD) and a data disk where most of the applications reside.

In order to find VBoxManage on such Windows systems, this patch searches
the D: drive as well before giving up.

Change-Id: I95140143e0a18cbce4179dcf8b57d16a9d0c986b

openstack/training-labs,openstack/training-labs,openstack/training-labs