refactor mongodb errors

broker/src/asapo_broker/database/mongodb.go

broker/src/asapo_broker/database/mongodb_test.go

broker/src/asapo_broker/server/process_request.go

broker/src/asapo_broker/server/process_request_test.go

common/go/src/asapo_common/utils/status_codes.go

tests/automatic/consumer/consumer_api_python/consumer_api.py