Add the explanation of configuration in DISTRIBUTED_ODENOS documentation.
Add the explanation of configuration in DISTRIBUTED_ODENOS documentation.

haizawa/odenos,o3project/odenos,nis-sdn/odenos,o3project/odenos,nis-sdn/odenos,nis-sdn/odenos,haizawa/odenos,nis-sdn/odenos,haizawa/odenos,haizawa/odenos,o3project/odenos,o3project/odenos,haizawa/odenos,nis-sdn/odenos,o3project/odenos