Fetch from --genesis-url likely to fail in composed container setup

[tdiesler]

The VON-Network webserver sleeps 10sec before startup in docker-compose. Presumably, it waits for the nodes to settle on some stable genesis state before it can serve the genesis Txs.

In Aca-Py we are a little less patient and only allow 5 retries with a 1sec timeout each - this is the default of the http fetch.

As a result, if you start VON-Network and Aca-Py in a composed way (i.e. docker compose or k8s) Aca-Py will likely fail to fetch from --genesis-url