[Bug 2080023] Re: [SRU] Enable s390x and ppc64el for .NET 8 on Jammy

[Mateus Rodrigues de Morais]

Verification results:

* s390x and ppc64el bootstraps were successful (binaries have been built).
* Autopkgtests are passing:
    - ppc64el [0]
    - s390x [1]
* Package dotnet8 is installable in ppc64el and s390x Ubuntu machines.
* The steps described in the SRU test plan document [2] were executed successfully in s390x and ppc64el Ubuntu machines with this version of dotnet8 installed.

[0] https://autopkgtest.ubuntu.com/results/autopkgtest-jammy/jammy/ppc64el/d/dotnet8/20240926_002512_0fc68@/log.gz
[1] https://autopkgtest.ubuntu.com/results/autopkgtest-jammy/jammy/s390x/d/dotnet8/20240926_002109_0fc68@/log.gz
[2] https://github.com/canonical/dotnet-source-build/blob/main/docs/SRUTestPlan.md

** Tags removed: verification-needed verification-needed-jammy
** Tags added: verification-done verification-done-jammy

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Title:
  [SRU] Enable s390x and ppc64el for .NET 8 on Jammy

Status in dotnet8 package in Ubuntu:
  Fix Released
Status in dotnet8 source package in Jammy:
  Fix Committed

Bug description:
  Upload available in PPA: https://launchpad.net/~dotnet-
  bootstrap/+archive/ubuntu/dotnet8.0.108-jammy-stage2

  [ Impact ]

   * This SRU aims to enable the s390x and ppc64el architectures on .NET 8
     targeting Ubuntu 22.04 (Jammy Jellyfish). These architectures have
     already been enabled for .NET 8 on Oracular Oriole and Noble Numbat.

   * This is part of the .NET team's roadmap for the Oracular Oriole
  cycle.

   * Per the changelog of the package in the PPA, the changes introduced in
     this upload are only related to the enablement of s390x and ppc64el.

  [ Test Plan ]

   * Run the steps outlined in the .NET SRU Test Plan document [1] on an s390x
     and ppc64el machine.

  [ Where problems could occur ]

   * s390x and ppc64el have already been enabled for .NET 8 on Oracular and
     Noble.

   * The patches introduced to fix various FTBFS and autopkgtest failures on
     ppc64el are only modifying parameters in unit test projects within the
     .NET code-base as well as the autopkgtest test runner code-base and its
     related libraries. These should not impact "shippable" products that land
     in the final binary packages.

   * If a problem occurs, it would be limited to .NET on s390x and ppc64el and
     will show up when using the product with normal day-to-day operations,
     which the test plan should be able to reproduce.

  [ Other Info ]

   * The s390x and ppc64el builds will require a bootstrap once they hit
      -proposed. The bootstrap packages have been prepared and are available
     in PPAs [2][3]. They will be uploaded to the Ubuntu Bootstrap PPA by an
     Archive Admin once we're ready to bootstrap.

   * When this upload hits -proposed, the s390x and ppc64el builds will stay
     in dependency wait status until the bootstrap packages are uploaded and
     the Launchpad team triggers the bootstrap. The .NET team
     (Toolchains/Foundations) will drive the coordination of these tasks once
     we're there.

  [0] https://bugs.launchpad.net/ubuntu/noble/+source/dotnet8/+bug/2064530
  [1] https://github.com/canonical/dotnet-source-build/blob/main/docs/SRUTestPlan.md
  [2] https://launchpad.net/~dotnet-bootstrap/+archive/ubuntu/dotnet8.0.108-jammy-stage1-s390x
  [3] https://launchpad.net/~dotnet-bootstrap/+archive/ubuntu/dotnet8.0.108-jammy-stage1-ppc64el

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