Fix "Hardware Type" for VMs

[vpetersson]

We need to fix the "Hardware Type" field for servers with the shift away from IoT.

Let's modify this to show the following:

• Virtual Machine
• Bare Metal

We look for if it's KVM/Xen to determine the above logic.

[a-martynovich]

What about qemu, VirtualBox, VMware, Parallels, other emulators? Should we detect them too?

[vpetersson]

Actually, let's keep this simple. Let's just display the architecture (e.g. x86)

[a-martynovich]

@vpetersson We already have Architecture field on the Hardware tab.

[vpetersson]

Good point. Let's just remove this field for now.