Http Server: Add firmware provider API

This expose the firmware provider API.
After the patch it would be possible to call:
http://localhost:8000/hardware/firmware/vendor
to get the vendor name.

Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
Http Server: Expose the hypervisor type

This expose the hypervisor type. After this path it would be possible to call:
http://localhost:8000/hardware/hypervisor
And get the hypervisor name.

Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>