[Bug 2141707] Re: AppArmor profiles missing for noble kernel 6.17

[Chloé Smith]

MP has landed in ~cloudware's fork, so noble CPC builds will be
alright/properly preseeded for now.

However we should still strive to get this upstreamed as soon as so we
aren't pinned to livecd-rootfs: 24.04.95 for longer than needed :salute:

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https://bugs.launchpad.net/bugs/2141707

Title:
  AppArmor profiles missing for noble kernel 6.17

Status in livecd-rootfs package in Ubuntu:
  New

Bug description:
  A CPC test build of noble with the 6.17 `-proposed` kernel uncovered
  that the AppArmor profiles are missing for 6.17 in livecd-rootfs,
  leading to fall back to the "generic" AppArmor profiles. This leads to
  `snap debug seeding` outputting a filled `seed-restart-system-key`
  dict [0] after first boot.

  [ Impact ]

  Boot will be slowed in the clouds by about ~200ms until this is
  resolved

  [ Test Plan ]
  * Build a noble cloud image with the 6.17 kernel (either normally or from `-proposed` if it hasn't migrated yet)
  * Boot and run `snap debug seeding`
  * Ensure that the output doen't include `seed-restart-system-key`

  [ Where problems could occur ]
  * If this fix has other/new problems `snap debug seeding` will just continue to report `seed-restart-system-key` (i.e. there shouldn't be any other fallout)

  [ Other Info ]

  CPC blocks image publication on a test that ensures that snaps are
  preseeded. As a result this will block noble image publication once
  the kernel becomes the HWE kernel/migrated from `-proposed`

  [0]: https://pastebin.ubuntu.com/p/sMFHVRq8Mb/

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