Dev: Make ansible playbook for server more robust for retries

When setting up the HPCS server on kind cluster with Ansible playbook [k8s/deploy-all.yaml](https://github.com/CSCfi/HPCS/blob/main/k8s/deploy-all.yaml), if the first try fails after _"Initialize vault"_, succeeding tries skip all tasks with `when: vault_init.rc == 0`.

Start with k8s/deploy-all.yaml and inspect the "Initialize vault" task, its registered vault_init result, and the following when condition. Run the playbook on the kind cluster with a forced first failure, then retry; done means later attempts do not skip all remaining tasks because of the initial result.

Written by the indexing model from the issue text.