chore!: update custom properties key (#253)

## Description

- Updating all instances of custom: [] to additionalNetworkAllow: []

> [!CAUTION]
> **BREAKING CHANGE** `custom` has changed to `additionalNetworkAllow`

## Related Issue

Fixes #
<!-- or -->
Relates to #

https://github.com/orgs/defenseunicorns/projects/118/views/12?pane=issue&itemId=87152090&issue=defenseunicorns%7Cuds-package-maintenance%7C5
## Type of change

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [x] 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-package-gitlab/blob/main/CONTRIBUTING.md#developer-workflow)
followed

---------

Co-authored-by: Wayne Starr <Racer159@users.noreply.github.com>
Release-As: v17.6.1-uds.2

bundle/uds-bundle.yaml

@@ -71,7 +71,7 @@ packages:
       valkey:
         uds-valkey-config:
           values:
-            - path: custom
+            - path: additionalNetworkAllow
               value:
                 - direction: Ingress
                   selector:

charts/config/templates/uds-package.yaml

@@ -501,7 +501,7 @@ spec:
       {{- end }}
 
       # Custom rules for unanticipated scenarios
-      {{- range .Values.custom }}
+      {{- range .Values.additionalNetworkAllow }}
       - direction: {{ .direction }}
         selector:
           {{ .selector | toYaml | nindent 10 }}

charts/config/values.yaml

@@ -85,7 +85,7 @@ mirroring:
 gitalyCgroupsInit:
   enabled: false
 
-# custom:
+# additionalNetworkAllow:
 #    # Notice no `remoteGenerated` field here on custom internal rule
 #   - direction: Ingress
 #     selector:

docs/configuration.md

@@ -16,7 +16,7 @@ Network policies are controlled via the `uds-gitlab-config` chart in accordance
 - `redis`:  sets network policies for accessing a Redis-compatible server from all GitLab services (`webservice`, `toolbox`, `sidekiq`, `migrations`, `gitlab-exporter`)
 - `postgres`: sets network policies for accessing a Postgres database from all GitLab services (`webservice`, `toolbox`, `sidekiq`, `migrations`, `gitlab-exporter`)
 - `mirroring`: sets network policies that allow the gitlab repository mirroring feature to work. It defaults to only `https` (443) but can be set to allow the other protocols gitlab supports via the `ports` key.
-- `custom`: sets custom network policies for the GitLab namespace - this allows for custom integrations with other services (i.e. Jira)
+- `additionalNetworkAllow`: sets custom network policies for the GitLab namespace - this allows for custom integrations with other services (i.e. Jira)
 
 > [!NOTE]
 > Currently the GitLab UDS Package contains Istio `PeerAuthentication` exceptions to allow the `dependency` init containers to reach out and check the Redis and Postgres services.  These are only added with `redis.internal` or `postgres.internal` set to `true` and will be removed once UDS Core [switches to native sidecars](https://github.com/defenseunicorns/uds-core/issues/536).