Add Support for Istio Operator-less Network Policies selector labels

General MR

Summary

Adds support for Istio Operator-less namespace selector labels to the package network policies

Relevant logs/screenshots

Tested in k3d dev cluster with istio Operator-less and headlamp

Tested in K3d dev cluster with Istio Operator and headlamp

Linked Issue

https://repo1.dso.mil/big-bang/bigbang/-/issues/2763](big-bang/bigbang#2763 (closed)

Upgrade Notices

N/A