Many Bookkeeper Spec parameters are not updatable at runtime

[SrishT]

Description

There are many Bookkeeper Spec parameters still remaining which cannot be updated once the bookkeeper cluster has been created. While not allowing updates on some parameters might make sense, it will be necessary to allow updates to some fields like Resources, EnvVars and a few others. The purpose of this issue is to consider all spec parameters and make every qualifying parameter updatable.

Importance

must have

Location

pkg/controller/bookkeepercluster/bookkeepercluster_controller.go

Suggestions for an improvement

The operator reconcile logic would need to be modified so that updates to necessary fields are allowed during the lifetime of the cluster.