Fix helmrelease tests in v0.4

Job #62187 failed for 5c9fe6a5:

$ pytest -v -s -m 'helmreleases' --app="$APP" --connection=ansible --ansible-inventory=${CLUSTER_DIR}/inventory.yml --hosts='ansible://*' --reruns 120 --reruns-delay 20
ERROR: usage: pytest [options] [file_or_dir] [file_or_dir] [...]
pytest: error: unrecognized arguments: --app=nextcloud
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information