ClusterSecretStore Does Not Require A Namespace

Bug

Description

ClusterSecretStore is not namespace aware, but we are expecting and passing in a namepace to it's template in secret-store.yaml

namespace: {{ $val.namespace }}

We should remove this line and namespace from any example/default values.

I think what we also want to do is to reference the key by namespace.

So, maybe we need to add namespace to live under accessKeyIDSecretRef:

          accessKeyIDSecretRef:
            namespace: external-secrets