[litevirt] Add a script for creating ssl certificates

Usage: litevirt-make-cert litevirt

This script will create key, cert and pem files in the meanwhile.
[litevirt] Add missing certificate files to repo
[litevirt] Enable SSL by default for lighttpd
[litevirt] Add litevirt-api to litevirt
[litevirt] Replace boot option check with rd.live.check

Boot option checkout is deprecated in F18, so replace it with rd.live.check
[litevirt] Simplify troubleshoot items in boot menu

    Remove unnecessary troubleshoot items in boot menu, which currently
make troubleshooting memu too long and looks like disordered.
[litevirt] Simplify troubleshooting boot menu (continued)