message: Insert test data with wc:majority
diff: @@ -205,7 +205,13 @@ void initialize_collection(collection* coll, array::view initial_data) {
  }
  if (documents_to_insert.size() > 0) {
  - coll->insert_many(documents_to_insert);
  + write_concern wc_majority;
  + wc_majority.acknowledge_level(write_concern::level::k_majority);
  +
  + options::insert insert_opts;
  + insert_opts.write_concern(wc_majority);
  +
  + coll->insert_many(documents_to_insert, insert_opts);
  }
  }
  