Added info about enabling VT in BIOS

There are a few different key words to look for in BIOS options.
Also, even if the grep command outputs, you might still have to
enable something in BIOS.

Change-Id: I3a3b0817926d77347e0cde8f2f421ee9d80f85f2
Install python-novaclient

Install the client so that the validation examples work

Change-Id: Idbd3a5c68fb488e2d786f48182a6f6d8d2094be4
Closes-Bug: #1239372
Merge "Added info about enabling VT in BIOS"
Merge "Install python-novaclient"