Gather some numbers characterizing OpenSDN (as a successor of Tungsten Fabric)

[mkraposhin]

Number are:

• count of previous and current users
• number of installations
• maximum number of managed hypervisors
• count of source code lines
• delays
• amount of operational CPU-hours (w/o accident)
• etc, etc

[randybias]

Have to get OpenSDN adoption first before we could compare to existing TF customers.