Renew HashiCorpt Vault token

[eiabea]

Description

I use the HashiCorp Vault as a secret storage and issued a separate token for the operator to set specific policies to ensure a higher level of security. It is not possible to issue tokens with an infinite TTL (except the root token, which i would like to avoid using), therefore the created token for the operator should be renewed in a fixed time interval (probably once a day)

What I experience

1. Create a HashiCorp Vault token (e.g. vault create token -policy stakewise)
2. Use this token to start the operator
3. Everything works fine
4. Wait until the token expires
5. Restart stakewise
6. Observe a 403 error on startup

What I expect

1. Create a HashiCorp Vault token (e.g. vault create token -policy stakewise)
2. Use this token to start the operator
3. Everything works fine
4. Token gets renewed every now and then and therefore never gets expired
5. Restart operator
6. Connect to the HashiCorp vault without any issue

[evgeny-stakewise]

How could it be implemented:

1. add Keystore.refresh() method
2. add KeystoreRefreshTask which refreshes keystore periodically
3. Add task to list of tasks https://github.com/stakewise/v3-operator/blob/v4.1.4/src/commands/start/base.py#L104

[evgeny-stakewise]

We do not use Hashi Vault internally. Nearly all Hashi Vault features have been contributed by the community, so we encourage you to contribute as well!