public static List<StoreKey> addPutMessagesToReplicasOfPartition(PartitionId partitionId, List<MockHost> hosts,
      int count) throws MessageFormatException, IOException {
    return addPutMessagesToReplicasOfPartition(partitionId, hosts, (short) 0, count);
  }
For the given partitionId, constructs put messages and adds them to the given lists.
@param partitionId the {@link PartitionId} to use for generating the {@link StoreKey} of the message.
@param hosts the list of {@link MockHost} all of which will be populated with the messages.
@param count the number of messages to construct and add.
@return the list of blobs ids that were generated.
@throws MessageFormatException
@throws IOException
ambry-replication/src/test/java/com/github/ambry/replication/ReplicationTestHelper.java