** Tags removed: verification-done-focal

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https://bugs.launchpad.net/bugs/2002812

Title:
  Revoke & rotate to new signing key

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Bionic:
  Fix Released
Status in linux source package in Focal:
  Fix Released
Status in linux source package in Jammy:
  Fix Released
Status in linux source package in Kinetic:
  Fix Released

Bug description:
  [ Impact ]

   * Revoke & rotate to new signing key

   * Update revocations, which match the next Ubuntu shim 15.7
  revocations. Specifically - revoke certs that were previously
  protected with by-hash revocations, revoke lost/unused certificates.

   * Start using advantage2021v1 and ubuntu2022v1 signing keys.

   * This is a routine key rotation.

  [ Test Plan ]

   * Check that old shim/grub boot this kernel
   * Check that the upcomming future shim/grub can boot this kernel
   * Check that these kernels can do signed kexec into itself

  [ Where problems could occur ]

   * Kernels with this patch applied should be signed using ubuntu/4
  pro/3 core/2 signing streams.

  [ Other Info ]
   
   * TPM PCR values and measurements will change when changing the signing key

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