updated license / added new check script / updated vdisks

Updated license to apache 2.0; fixed check_vdisks.sh and streamlined
the code a bit ; added physical disk checker; all these check scripts
requires omreport 7.2+; if should work on older versions but you will
need to update the headers for the while loop!
Updated header/license

Updated the script header to be correct as I renamed my account :)