feat!: Update Flux ks names and add volsync and snapshot-controller (#1036)

bootstrap/templates/kubernetes/apps/networking/nginx/external/helmrelease.yaml.j2

@@ -4,7 +4,7 @@ apiVersion: helm.toolkit.fluxcd.io/v2beta1
 kind: HelmRelease
 metadata:
   name: nginx-external
-  namespace: networking
+  namespace: &namespace networking
 spec:
   interval: 30m
   chart:
@@ -70,7 +70,7 @@ spec:
         enabled: true
         serviceMonitor:
           enabled: true
-          namespace: networking
+          namespace: *namespace
           namespaceSelector:
             any: true
       extraArgs: