remove outdated comments

.gitlab-ci.yml

-#
-# Things worth knowing wrt to the pipelines aas well as the branches / environments:
-#
-# Main:
-# - Runs "tests" on all pushes, i.e. it performs a clean(!) install and runs the helm chart tests.
-# - If successful, it creates a tarball from the helm chart and uploads that as an artifact.
-# - There's no tags, no releases and no pushes to the helm repository.
-#
-# Release:
-# - Does NOT allow pushes. Create merge requests from main instead.
-# - Merge requests are only allowed to be merged if the main pipeline did run successfully.
-# - Does NOT run any tests (or anything else from main).
-# - Pushes the helm chart to the repository (which is in fact the GitLab built-in container registry).
-# - Creates a release: a tag on the branch and a downloadable release (source code tarballs/archives).
-#
-# ALWAYS bump the version in chart/Chart.yaml before merging code into RELEASE.
-# The release pipeline will not run successfully, if the the version has not been bumped.
-# This is in order to not overwrite an existing version.
-#
-# If you need to replace an existing version for some reason, you MUST first delete the tag on
-# the branch (and thus the release in the project) as well as the tag in the container registry.
-# Here's the links to delete the two types of tags:
-# https://gitlab-int.switch.ch/maps/shibboleth-sp-helm-chart/-/tags
-# https://gitlab-int.switch.ch/maps/shibboleth-sp-helm-chart/container_registry/143
-
 default:
   tags:
     - docker-host-linux
@@ -96,6 +71,7 @@ prepare:
 # we always want to perform an install (rather than an upgrade) in order to ensure the pre-install hooks work
 pre-cleanup:
   stage: pre-cleanup
+  resource_group: helm-deployment
   environment:
     name: main
   only:
@@ -105,6 +81,7 @@ pre-cleanup:
 
 deploy:
   stage: deploy
+  resource_group: helm-deployment
   environment:
     name: main
   only:
@@ -119,6 +96,7 @@ deploy:
 
 verify:
   stage: verify
+  resource_group: helm-deployment
   environment:
     name: main
   only:
@@ -133,6 +111,7 @@ verify:
 # thus we're making extra sure to delete everything
 post-cleanup:
   stage: post-cleanup
+  resource_group: helm-deployment
   environment:
     name: main
   only: