Remove deprecated "k8s.io/utils/pointer" library

[dereknola]

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

"k8s.io/utils/pointer" has been depreacated in favor of "k8s.io/utils/ptr"

Describe the solution you'd like

Replace all uses of old library with new library. The new library is more generic with the ptr.To() function being a catch all for any typevalue.

Describe alternatives you've considered

Additional context

[dereknola]

There is nothing to QA. This is a internal code change with no externally visible differences.