feat: allow istio proxy injection in zarf ignored namespaces (#513)

## Description

This allows the istio image to always be pulled from Zarf even in
ignored namespaces.

## Related Issue

Fixes #N/A

## Type of change

- [ ] Bug fix (non-breaking change which fixes an issue)
- [X] New feature (non-breaking change which adds functionality)
- [ ] Other (security config, docs update, etc)

## Checklist before merging

- [X] Test, docs, adr added or updated as needed
- [X] [Contributor Guide
Steps](https://github.com/defenseunicorns/uds-template-capability/blob/main/CONTRIBUTING.md)(https://github.com/defenseunicorns/uds-template-capability/blob/main/CONTRIBUTING.md#submitting-a-pull-request)
followed

---------

Co-authored-by: Micah Nagel <micah.nagel@defenseunicorns.com>

src/istio/values/registry1-values.yaml

@@ -2,6 +2,8 @@ pilot:
   image: registry1.dso.mil/ironbank/tetrate/istio/pilot:1.22.2-tetratefips-v0
 global:
   proxy_init:
-    image: registry1.dso.mil/ironbank/tetrate/istio/proxyv2:1.22.2-tetratefips-v0
+    # renovate: image=registry1.dso.mil/ironbank/tetrate/istio/proxyv2
+    image: "###ZARF_REGISTRY###/ironbank/tetrate/istio/proxyv2:1.22.2-tetratefips-v0"
   proxy:
-    image: registry1.dso.mil/ironbank/tetrate/istio/proxyv2:1.22.2-tetratefips-v0
+    # renovate: image=registry1.dso.mil/ironbank/tetrate/istio/proxyv2
+    image: "###ZARF_REGISTRY###/ironbank/tetrate/istio/proxyv2:1.22.2-tetratefips-v0"

src/istio/values/upstream-values.yaml

@@ -2,6 +2,8 @@ pilot:
   image: "docker.io/istio/pilot:1.22.2-distroless"
 global:
   proxy_init:
-    image: "docker.io/istio/proxyv2:1.22.2-distroless"
+    # renovate: image=docker.io/istio/proxyv2
+    image: "###ZARF_REGISTRY###/istio/proxyv2:1.22.2-distroless"
   proxy:
-    image: "docker.io/istio/proxyv2:1.22.2-distroless"
+    # renovate: image=docker.io/istio/proxyv2
+    image: "###ZARF_REGISTRY###/istio/proxyv2:1.22.2-distroless"