release 1.15.x Istio-cni name hub fix

This issue was pointed out in bb value stream chat. Current tagged version of istio-controlplane has to many istio-cni's this overwrites the hub value so it correctly templates.

We can cut a 1.15.2 with this.

Add to synker: https://repo1.dso.mil/platform-one/big-bang/bigbang/-/issues/743

Closes: https://repo1.dso.mil/platform-one/big-bang/apps/core/istio-controlplane/-/issues/40