ci: Add temporary CI/CD config to upgrade the cluster to use Helm 3
The latest production
jobs failed because it used the registry.gitlab.com/gitlab-org/cluster-integration/auto-deploy-image:v2.6.0
image, which uses Helm 3.
The latest successful production
job used the registry.gitlab.com/gitlab-org/cluster-integration/auto-deploy-image:v1.0.7
image, which uses Helm 2.
This MR brings temporary CI/CD config to update the deployments to use Helm 3 (https://docs.gitlab.com/ee/topics/autodevops/upgrading_auto_deploy_dependencies.html#helm-3).
Edited by Hordur Freyr Yngvason