Check if orchestration and replica policy are available

[GBrawl]

Description of feature

Right now Stackl just assumes these are available in OPA, but heavily depends on them. When deploying with Helm these get mounted in OPA right away, but we should also make sure that when another OPA instance is used (maybe a managed one or a local one) these needed policies are also in there.

Additional information

One way we can do this is keeping them in Stackl as documents and push them when we need them (Like we do with the other policies). Or we could make use of the bundle api in OPA but then OPA needs to be configured to use these.