Create reusable Requeue functions for the Reconcile loop

Summary

At many points in our Reconcile loop, we return in a few ways depending on whether we want to requeue:

• return ctrl.Result{}, err to requeue
• reutrn ctrl.Result{}, nil to not requeue
• return ctrl.Result{RequeueAfter: waitInterval}, nil to requeue after the specified wait period

References

• https://cloud.redhat.com/blog/7-best-practices-for-writing-kubernetes-operators-an-sre-perspective
  • Point 7: Reconciling Return Values

Acceptance criteria

• Functions are created for common reconcile loop returns
• Functions are implemented in the reconcile loop