basic-server: LocalFileSystem: Use UUIDs instead of Long inodes

Currently, LocalFileSystem creates fake "Inode" numbers, incrementally
starting from 1.

This may cause inode confusion when restarting the NFS server.

Use random UUIDs (which are practically collision-free) instead. Use a
stable v3 UUID for the root inode, derived from the Path string.

Also provide a hook (for subclasses, etc.) to disable the reporting of
64-bit "ino" fileids, which is possible for NFSv4-only environments. For
now, derive tsuch "ino" values from the first 64-bits of the UUID.

Related: #149
Signed-off-by: Christian Kohlschütter <[email protected]>

Author: kohlschuetter