Update notes for submitted changes

* Initial checkin for contrail storage stats daemon [review changes] 1. added unit tests 2. renamed/restructured SConscript files 3. restructured setup.py 4. added stats-daemon.conf 5. added test packages in SConscript 6. modified storage_nodemgr.py based on review comments 7. added latency changes 8. added diff logic for read/write bytes/counts for gui 9. added --conf_file option during daemon init 10. removed storage_nodemgr.py install in /usr/bin 11. added contrail-storage-stats console script path in     storage stats upstart 12. removed /usr/bin/python from upstart file since it     was not needed Change-Id: I22d539cd7f054e10fac5b6da5f5446d849ce96ee