@Override
  public List<DiskId> getDiskIds() {
    List<DiskId> disks = new ArrayList<>();
    for (String mountPath : mountPaths) {
      disks.add(new MockDiskId(this, mountPath));
    }
    return disks;
  }
This datanode will always return an HTTP/2 port in {@link #getPortToConnectTo()} if enableHttp2Replication
is set to true.
@param enable http2 replication if it's true.
ambry-test-utils/src/main/java/com/github/ambry/clustermap/MockDataNodeId.java