Added info about enabling VT in BIOS
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

AlekhyaMallina-Vedams/openstack-manuals,gongysh2004/openstack-manual,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,potsmaster/openstack-manuals,saeki-masaki/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,Akasurde/openstack-manuals,saeki-masaki/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,Akasurde/openstack-manuals,kairoaraujo/openstack-manuals,potsmaster/openstack-manuals,kairoaraujo/openstack-manuals,gongysh2004/openstack-manual