Support updating StatefulSet for fields other than 'replicas', 'template', and 'updateStrategy'

[cooltea713705]

Is your feature request related to a problem? Please describe.

When trying to update the StatefulSet managed by redis-operator, the following error occurs: StatefulSet.apps "..." is invalid: spec: Forbidden: updates to statefulset spec for fields other than 'replicas', 'template', and 'updateStrategy' are forbidden. This occurred while trying to update metadata.labels referring to a Helm chart which version changed.

Describe the solution you'd like

Support updating other fields than those.

Describe alternatives you've considered

N/A

What version of redis-operator are you using?

redis-operator version: v0.14.0

Additional context

• This was initially to update the requested/limit memory on the Helm chart and was worked around by providing overriding values.
• I have found this suggestion: https://github.com/OT-CONTAINER-KIT/redis-operator/issues/362#issuecomment-1293888444 which is to delete and recreate the StatefulSet which makes sense, I wonder if it can be worked around for our use case.

[jpuskar]

Deleting and recreating makes sense with our use-case too. Maybe an annotation called something like updateStrategy: recreate? If the operator gets back the error message above, then it can call delete + create instead of patch.

We ran into this when trying to swap between TLS and non-TLS, for single-node redis cache instances.