CA-118742: Drop whitelisting of HBA device drivers from devscan.py

CA-14825 introduced device driver whitelisting when probing HBAs to avoid that
local disks are listed when calling "xe sr-probe type=lvmohba".

Today the use of shared storage using SAS, FC, FCOE and iSCSI is the norm and
it is becoming increasingly difficult to ensure that the whitelisting of device
drivers is current.

Replacing the whitelisting with blacklisting for explicitly local device driver
groups should improve the customer experience, interoperability of SM, reduce
the maintenance effort and at the same time reduce the complexity of the code.

It seems less concerning that users might end up provisioning a local disk with
LVHDoHBA instead of LVHD, than that users end up not beeing able to provision
their shared storage at all. Also the chance of missing a local device driver
appears much lower due to the more consistent naming.