parse optional holeFile after https://github.com/nuvolabase/orientdb/commit/c0c1c7b0f324aad1c1636aa831cf3cac0617307a
deserialize Set new serialization of https://github.com/nuvolabase/orientdb/commit/264898eb2595056c5af94c0734c64660ab0d5998
Unfortunately, this commit breaks compatibility with orient 1.3.0

This reverts commit 9363bf23b3023855151fc353bff9e52f8c7b1b43.