[Chart] Functionality to add additional ClusterRoleBindings

[robson90]

Is your feature request related to a problem? Please describe.
I want to define more than the default namespace. For e.g. I want the secrets operator to provide secrets into multiple namespaces, which have their own VaultStaticSecret.

Describe the solution you'd like
Ranging over a map of values for additional ClusterRole bindings.

Describe alternatives you've considered
For now we are adding our own ClusterRoleBinding, that defines all namespaces where the secret operator should insert VaultStaticSecret´s

Additional context

Will provide a PR.