[stable/redis] helm upgrade change password secret

[maver1ck]

Is this a request for help?: NO

---

Is this a BUG REPORT or FEATURE REQUEST? (choose one):
BUG REPORT

Version of Helm and Kubernetes:

Helm: v2.8.2
K8s: v1.9.3

Which chart:
stable/redis

What happened:
After helm upgrade secret with password has changed but redis password remains the same.

What you expected to happen:
Helm upgrade shouldn't change redis password secret

How to reproduce it (as minimally and precisely as possible):

1. Create stable/redis deployment.
   helm install stable/redis
2. Save password
3. Upgrade it
   helm upgrade NAME stable/redis
4. Try to log in to redis with new password
5. Try to log in to redis with old password.

Anything else we need to know:

[Miouge1]

I think this happens only if you have persistence enabled.
See #4965

[mikberg]

Similar: #2538

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[maver1ck]

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[stale]

This issue is being automatically closed due to inactivity.