Update notes for submitted changes

* Initial checkin for contrail storage stats daemon [review changes] 1. provisioning changes added 2. added unit tests 3. renamed/restructured SConscript files 4. restructured setup.py 5. added stats-daemon.conf 6. added test packages in SConscript 7. modified storage_nodemgr.py based on review comments 8. added latency changes in  storage-nodemgr.py 9. added diff logic for read/write bytes/counts for gui 10. Changed DEFAULT to DEFAULTS during provisioning