Add more Helm tests

• Tests for operator: add/remove benchmark/execution
  • to verify whether CRDs are correctly installed and can be accessed
• Test for job: add a simple job
  • to verify that all permissions are there

added Nice To Have modul/theodolite labels

mentioned in merge request !214 (merged)

mentioned in merge request !285 (merged)

!214 (comment 11438):

Manual command for checking execution state:

kubectl run kubectl -it --rm --image bash --serviceaccount theodolite -- bash
# in pod container shell:
apk add -U wget bash openssl
kubectl get exec execution-name -o json | jq .status.executionState

We should start from bitnami/kubectl or install kubectl via:

export KUBECTL_VERSION=v1.21.3
wget -q -O /usr/local/bin/kubectl https://storage.googleapis.com/kubernetes-release/release/${KUBECTL_VERSION}/bin/linux/amd64/kubectl && \
    chmod +x /usr/local/bin/kubectl

assigned to @she

In contrast to the initial issue description, we decided to have a test, which deploys a benchmark along with an execution and wait (with some timeout) until the execution completed successfully.

closed with merge request !285 (merged)

mentioned in commit 81fc4810