Installer: introduce namespacePrefix, fix certificates, split matrix installation using pre-install hook
diff --git a/charts/namespaces/values.yaml b/charts/namespaces/values.yaml
index d17d865..9cb3886 100644
--- a/charts/namespaces/values.yaml
+++ b/charts/namespaces/values.yaml
@@ -1,4 +1,5 @@
 pcloudInstanceId: example
+namespacePrefix: example-
 namespaces:
 - foo
 - bar