[Chore]: PR vault command completion

[georgethebeatle]

Vault supports autocompletion for kv version 1 only and not every command is configured to use it. Let's contribute support for kv version 2 and configure all relevant commands to use it

[georgethebeatle]

We have opened a PR in vault that fixes the completion for KV v2. Once this PR is merged and makes it to a release we can stop using our fork in eirini-station and resume installing the original vault release.