ci: update release job and drop semantic release

[a-cordier]

see https://gravitee.atlassian.net/browse/GKO-15

Done

The pipeline as the following parameters:

  trigger:
    type: enum
    default: test
    enum:
      - release
      - test
  release-version:
    type: string
    default: ""
  latest:
    type: boolean
    default: false
    description: Is this version the latest version available ?
  dry-run:
    type: boolean
    default: true

• trigger should alway be release in that case
• if latest is true, both the docker image and the github release will be flagged as latest
• if dry run is set to false the additional steps will be
  • pushing the docker image to docker hub with latest tag (as this is the latest version)
  • release the helm chart on https://helm.gravitee.io/
  • push release commit and tag to the release branch (4.4.X)
  • publish the github release with the changelog we generate from Jira and the custom
    resource definitions packaged as a zip file
  • announce the release on the release alert channel

The github release Changelog is generated from the tickets found for the version in our Jira backlog

The trigger-release github action allows to call the pipeline from the repo itself and looks like this

To Be Done

Submit changelog / release note as a PR for tech writers