admin password does not get updated

[maciej-markowski]

Version
2024.5.8

Describe the bug

1. Once operator is created, default admin password remains the same for each galaxy object.
2. With both default and custom admin password secret, admin password does not get updated in galaxy once secret is changed.

To Reproduce

1. deploy galaxy
2. obtain admin password, login -> success
3. update admin password secret
4. login with new password -> failure
5. login with old password -> success

Expected behavior
4. login with new password -> success
5. login with old password -> failure

Additional context

1. Operator should update admin password on secret change.
2. Default password should be generated dynamically on galaxy deployment, not on operator deployment.
3. In current situation, user may be left with unusable galaxy - if it was deployed with custom admin password secret which was then "forgotten" and then if secret gets deleted or updated, admin is unable to login.