Stable v3.1.0

ChangeLog

• Unit number support
  • Enables use of unit_number per data disk. scsi_controller_count formula modified to determine how many controllers are required based on the highest of data_disk_scsi_controller, var.scsi_controller, OR highest of (unit_number+1)/15 and rounded up using ceil(). so for the following unit_numbers they would equate to:

Unit#  SCSI-ID  formula-result
0      0:0      1
2      0:2      1
15     1:0      2
16     1:1      2
30     2:0      3
45     3:0      4
59     3:15     4

Contributors
@damnsam