The proposed changes concern two steps:
First, when creating the RAID configuration, have a GPT partition
table type (this is not necessary, but more natural with UEFI).
Also, leave some space, either for the EFI partitions or the BIOS
boot partitions, outside the Software RAID.
Secondly, when installing the bootloader, make sure the correct
boot partitions are created or relocated.
Change-Id: Icf0a76b0de89e7a8494363ec91b2f1afda4faa3b
Story: #2006379
Task: #37635