[Bug 1912830] Please test proposed package

[Łukasz Zemczak]

Hello Dimitri, or anyone else affected,

Accepted livecd-rootfs into bionic-proposed. The package will build now
and be available at https://launchpad.net/ubuntu/+source/livecd-
rootfs/2.525.51 in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
bionic to verification-done-bionic. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-bionic. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

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https://bugs.launchpad.net/bugs/1912830

Title:
  Use non-removable uefi bootloader in cloud-images by default

Status in livecd-rootfs package in Ubuntu:
  Fix Released
Status in livecd-rootfs source package in Bionic:
  Fix Committed
Status in livecd-rootfs source package in Focal:
  Fix Committed
Status in livecd-rootfs source package in Groovy:
  Fix Committed

Bug description:
  [Impact]

   * use non --removable uefi installation for cloud-images

   * Currently cloud-images use --removable grub installation, which
  makes the disk images look at lot more like our installer .isos, than
  installed systems.

     This causes many issues:

   * ubuntu efiboot entry is not created by the fallback manager from shim
   * one cannot reorder ubuntu boot entry, and/or boot and apply fwupdate updates (if possible)
   * measurements are unstable, and change if one call grub-install and or upgrades things
   * often grub & shim upgrades are not applied at all as \EFI\ubuntu does not exist on the ESP

   * We should switch to only shipping shim/fallback/mm in \ESP\Boot and
  ship \ESP\ubuntu on the cloud-image ESPs such that we regain stable
  measurements; ubuntu boot entry; and upgrades of grub and shim.

  [Test Case]

   * After UEFI firstboot $ efibootmgr --verbose => should contain
  `ubuntu` entry pointing at ESP\ubuntu\shim*.efi binary, which should
  be added to the bootorder

  [Where problems could occur]

   * Existing systems which were booted from previous style images, will
  not upgrade shim|grub on the ESP, and must call `grub-install` or
  `grub-multi-install` to correct that.

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