Reword the changelog fragments to better generate the CHANGELOG.md when we release 1.0.

[jmrodri]

Description of the change:
Reword the changelog fragments to better generate the CHANGELOG.md when we release 1.0.

Motivation for the change:
Preparing for a 1.0 CHANGELOG.

Checklist

If the pull request includes user-facing changes, extra documentation is required:

• Add a new changelog fragment in changelog/fragments (see changelog/fragments/00-template.yaml)
• Add or update relevant sections of the docs website in website/content/en/docs

[camilamacedo86]

I am ok with the fixes in the changelog. 👍
/lgtm

However, as we spoke I think we can simplify by combining some changes. Add here my suggestions as well.

[joelanford]

This should be consolidated with the removal of legacy metrics generation in Helm and Ansible operators fragments (again, in the release prep PR)

[camilamacedo86]

All legacy removals IMO could be replaced for one fragment:

# entries is a list of entries to include in
# release notes and/or the migration guide
entries:
  - description: >
      Remove support for the legacy layout. Operator SDK has a new CLI and project layout that is aligned with Kubebuilder. (//todo: add all pr's numbers)
      
    kind: "removal"
    # Is this a breaking change?
    breaking: yes
    # Migration can be defined to automatically add a section to
    # the migration guide. This is required for breaking changes.
    migration:
      header: Migrate your projects for the new layout
      body: >
        Operator SDK has a new CLI and project layout that is aligned with Kubebuilder.
        See `operator-sdk init -h` and the following doc on how to scaffold a new project:
        To migrate existing projects to the new layout see the migrations guides in
        https://sdk.operatorframework.io.
        - For Go-based Operators: https://master.sdk.operatorframework.io/docs/building-operators/golang/project_migration_guide/
        - For Helm-based Operators: https://master.sdk.operatorframework.io/docs/building-operators/helm/migration/
        - For Ansible-based Operators: TBD

Wdyt @joelanford

[camilamacedo86]

IMO we can combine the metrics change for Ansible and Helm:

Breaking change: (Valid only for Ansible/Helm-based Operators). Added --metrics-addr flag to make it configurable, and changed the default port used by the metric endpoint binds to from :8383 to :8080. (#3489, #3440)

[openshift-ci-robot]

New changes are detected. LGTM label has been removed.

[jmrodri]

Closing this pull request in favor of the upcoming release PR.