Fixes #37887 - Add metadata fields to docker manifest lists

[sjha4]

What are the changes introduced in this pull request?

Add metadata fields that were added to manifests to manifest labels as these fields are applicable to both.

Considerations taken when implementing this change?

This is similar to what we did before for manifests in Katello. #10975

What are the testing steps for this pull request?

1. Check out this PR and run bundle exec rails db:migrate
2. Create and sync a bootable or flatpak repo
3. Check that the manifest lists that get created have their own fields set according to information in pulp.

Sync a container repo with labels/anotations.
ex: https://quay.io/repository/centos-bootc/fedora-bootc
tag: sha256-4b336aaec054e57549075517ae025a8c3b8b23703d928437dce6a1db068eae5a

Check the API , replace :ID :

https://centos8-katello-devel-stable.example.com/katello/api/v2/docker_manifest_lists?organization_id=1&page=1&paged=true&per_page=20&repository_id=:ID&search=

[ianballou]

Looking great:

vagrant@potato ~/foreman $ curl https://`hostname`/katello/api/v2/docker_manifest_lists/4 -u admin:changeme | jq
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   827  100   827    0     0   3595      0 --:--:-- --:--:-- --:--:--  3595
{
  "id": 4,
  "schema_version": 2,
  "digest": "sha256:650b3c79307f5cff36bce3a59e928279e96b02e18e1aacb8b30f6916c477ab14",
  "manifest_type": "list",
  "annotations": {},
  "labels": {},
  "is_bootable": true,
  "is_flatpak": false,
  "tags": [
    {
      "id": 4,
      "repository_id": "centos-bootc",
      "name": "stream9"
    }
  ],
  "manifests": [
    {
      "id": 10,
      "digest": "sha256:893b636bbc5725378ce602f222f26c29f51334f93243ae8657d31391634eb024",
      "schema_version": 2,
      "manifest_type": "image"
    },
    {
      "id": 11,
      "digest": "sha256:5f10bccd5246ececc3fa1d8f3dc8726a1e3ac10a30da44764a988603c11a0d70",
      "schema_version": 2,
      "manifest_type": "image"
    },
    {
      "id": 12,
      "digest": "sha256:22bf1c634c1491d905febb0e4726d6fbdfb2f775be23c47f74406d4c10be7b2c",
      "schema_version": 2,
      "manifest_type": "image"
    },
    {
      "id": 13,
      "digest": "sha256:20684c7064db93d4a9710fb6935185fdb137f16754f01aee401ab498acbe153c",
      "schema_version": 2,
      "manifest_type": "image"
    }
  ]
}

One question: should we also update https://github.com/katello/katello/blob/master/lib/katello/tasks/repository.rake#L117 ?

We can make it start reindexing manifest lists as well.

[ianballou]

Looks good!