in ISO installer, prompt to format other drives for artifact storage rather than just doing it automatically

[mmguero]

As indicated in the documentation, Malcolm's installer ISO assumes all drives attached to the system are available to it for formatting and use, and this is pretty much automatic and baked-in to the ISO installer.

During the installation itself, this script determines the disk onto which Malcolm will be installed, and uses these rules (depending on the type of installation chosen) to partition that disk.

Then, at the end of the installation, the preseed creates a file called /etc/capture_storage_format which is detected on first boot and used to format the other non-system drives (for PCAP storage, database, etc.). The script that actually does that formatting is found at os-disk-config.py.

My suggestion here is that during the late user config (for Malcolm and Hedgehog ISO insallers) we prompt the user if they want to format those drives or not. If so, we do the touch (Malcolm, Hedgehog) there instead of doing it automatically. That way, on first boot, the extra drives will be formatted or not according to the user preference.

[mmguero]

See cisagov/discussions/325

[mmguero]

• /etc/capture_storage_format
• /etc/capture_storage_format.crypt
• /etc/capture_storage_format.none

[mmguero]

done and tested