chore: Produce the latest image for feature branches and tags
This commit extends the CI jobs to create floating versions of images, which is useful to easily integrate with CI Template. e.g.
image: "registry.gitlab.com/gitlab-org/cluster-integration/auto-deploy-image:v1"
image: "registry.gitlab.com/gitlab-org/cluster-integration/auto-deploy-image/feat-canary-ingress:latest"
Edited by Shinya Maeda