Installer: introduce namespacePrefix, fix certificates, split matrix installation using pre-install hook
diff --git a/charts/pihole/values.yaml b/charts/pihole/values.yaml
index a7ced0b..65d1de4 100644
--- a/charts/pihole/values.yaml
+++ b/charts/pihole/values.yaml
@@ -5,10 +5,9 @@
   cookieSecret: ""
   secretName: oauth2-secret
   configName: oauth2-proxy
-domain: example.com
+domain: pihole.p.example.com
 hydraPublic: https://hydra.example.com
 profileUrl: https://profile.example.com
-certificateIssuer: public
-ingressClassName: public
+ingressClassName: private