These messages based on our prep stage during XL
and prints more informative message regarding
drive information.
This change also does a much needed refactoring.
This change initializes rpc servers associated with disks that are
local. It makes object layer initialization on demand, namely on the
first request to the object layer.
Also adds lock RPC service vendorized minio/dsync
Harshavardhana
Anis Elleuch
Krishnan Parthasarathi