Enabled replication for search results bucket (pi_responses) in Connect+

Before Trenitalia was ON ( <= 17:20 ) => No errors on INIT booking ✅

After Trenitalia was ON ( > 17:20 ) => We had errors, but because of latency, not because offers were NOT found. Then we added new replicas to the BPC Connect+ and the errors were gone. :rocket:

More details in https://goeuro.atlassian.net/browse/FND-899