deoss v0.2.5
1.Update sdk to v0.3.9(#92 )
2.Remove the internal and loopback addresses of the discovered nodes(#92 )
3.Add an interface for obtaining discovered nodes(#93 )
4.Increase the function of obtaining data between deoss(#93 )
5.Persistent storage of discovered nodes(#92 )
6.Add an interface to query whether there is a certain file(#93 )