A FC ping statistics entry.
An entry will be created automatically in this table when the
hh3cFcPingRowStatus of a ping request in the hh3cFcPingTable
is set to 'active'.
The entry in this table will have the same indices as the entry
that in the hh3cFcPingTable.
An entry in this table will be deleted when the corresponding
entry in the hh3cFcPingTable is deleted.