[Bug 1920008] [NEW] grub2-signed depends on grub2-common

[Dimitri John Ledkov]

Public bug reported:

[Impact]

 * one-grub has loosed the dependencies between src:grub2-signed and
src:grub2, specifically grub2-common. However the modules in grub
modules built by src:grbu2-unsigned require a high enough version of
grub2-common with support for R_X86_64_PLT32 relocations. Generate
depends that are high enough, for older releases.

Otherwise users that have grub-efi-amd64-signed installed may get errors
upon trying to configure the package from `grub-install` unable to
handle unknown relocation.

[Test Plan]

 * Disable -proposed

 * Install grub-efi-amd64-signed

 * Enable -proposed

 * Install grub-efi-amd64-signed (again)

 * Observe that not only grub-efi-amd64-signed is upgraded, but also
that new version of grub2-common are upgraded too, on bionic and earlier
series.


[Where problems could occur]

 * As one-grub evolves, similar dep updates may be required in the
future again. Thus every one-grub update should be tested across all
releases prior to upload into -proposed.

[Other Info]
 
 * This bug also reported at https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1917509

** Affects: grub2-signed (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1920008

Title:
  grub2-signed depends on grub2-common

Status in grub2-signed package in Ubuntu:
  New

Bug description:
  [Impact]

   * one-grub has loosed the dependencies between src:grub2-signed and
  src:grub2, specifically grub2-common. However the modules in grub
  modules built by src:grbu2-unsigned require a high enough version of
  grub2-common with support for R_X86_64_PLT32 relocations. Generate
  depends that are high enough, for older releases.

  Otherwise users that have grub-efi-amd64-signed installed may get
  errors upon trying to configure the package from `grub-install` unable
  to handle unknown relocation.

  [Test Plan]

   * Disable -proposed

   * Install grub-efi-amd64-signed

   * Enable -proposed

   * Install grub-efi-amd64-signed (again)

   * Observe that not only grub-efi-amd64-signed is upgraded, but also
  that new version of grub2-common are upgraded too, on bionic and
  earlier series.

  
  [Where problems could occur]

   * As one-grub evolves, similar dep updates may be required in the
  future again. Thus every one-grub update should be tested across all
  releases prior to upload into -proposed.

  [Other Info]
   
   * This bug also reported at https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1917509

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