Use k8s.io/utils/pointer to instantiate pointers throughout the codebase

[AObuchow]

Description

Currently, throughout the DWO repo we are initializing variables so that they can be referenced as pointer values when needed, for example here.

Instead, we should make use of k8s.io/utils/pointer to instantiate pointers and reference them in a single statement.
For example, one can get a pointer that points to a boolean with the value true by doing: pointer.BoolPtr(true)

Additional context

Here is where this idea was initially suggested: #953 (comment)