Support bucket versioning (#9377)

- Implement a new xl.json 2.0.0 format to support,
  this moves the entire marshaling logic to POSIX
  layer, top layer always consumes a common FileInfo
  construct which simplifies the metadata reads.
- Implement list object versions
- Migrate to siphash from crchash for new deployments
  for object placements.

Fixes #2111

cmd/admin-server-info.go

@@ -29,7 +29,7 @@ import (
 func getLocalServerProperty(endpointZones EndpointZones, r *http.Request) madmin.ServerProperties {
 	var disks []madmin.Disk
 	addr := r.Host
-	if globalIsDistXL {
+	if globalIsDistErasure {
 		addr = GetLocalPeer(endpointZones)
 	}
 	network := make(map[string]string)