Use better ISO Volume ID labels (bsc#1236401)

[lslezak]

Problem

• The agama-installer label is used as the ISO Volume ID, that does not provide much value
• It should tell more details about the product, version or architecture
• See https://bugzilla.suse.com/show_bug.cgi?id=1236401

Solution

• Change the logic to use the Kiwi profile name as part of the Volume ID
• Make the profile names more descriptive (include the version where it makes sense)

Notes

• The Volume ID label is limited to max. 32 characters
• The openSUSE profile can install both Leap and Tumbleweed distributions so do not include any version name there

Implementation details

• The volid Kiwi attribute for ISO images can be only a static text, we cannot do something like ${profile}-${arch}
• It is not used for the oem images, removed
• We already changed the Volume ID in the fix_bootconfig script so just make it better

Testing

• Tested manually

> isoinfo -d -i agama-installer.x86_64-11.0.0-Leap-16.0-Build.iso | grep "Volume id"
Setting input-charset to 'UTF-8' from locale.
Volume id: Install-Leap-16.0-x86_64
> isoinfo -d -i agama-installer.x86_64-11.0.0-SUSE-SLE-16-Build.iso | grep "Volume id"
Setting input-charset to 'UTF-8' from locale.
Volume id: Install-SUSE-SLE-16-x86_64

Additional fixes

• Allow starting the UEFI firmware configuration from the boot menu
• Display graphical menu also in SLE (fixed theme support)

Boot menu labels

• While touching the fix_bootconfig script I also improved the Grub2 boot menu
• Use the profile name and the architecture there as well, it is much better than generic agama-installer which does not tell much to the users.

Screenshots

Leap 16.0 ISO

Generic openSUSE ISO

Just for comparison the old openSUSE boot menu

SLE16 ISO (graphical mode)

SLE16 ISO (text mode)

SLE16 ISO, when booting in EFI system additional "UEFI Firmware Settings" item is displayed