[c-nsp] High temperatures on cisco 6504-E chassis

[Kevin Graham]

> Maybe it's the fact that these are sup720-3cxl-10ge , with X2 modules
> installed (which also seem to get hot, 41C), and this packed in a small
> chassis.... 

Check CISCO-ENTITY-SENSOR-MIB::entSensorThresholdTable. Looking at some
720C-10GE's, the minor threshhold for the 'asic-#' sensors are 90-95C
with criticals at 105-110C.

Your inlet seem to be high, but no need to be concerned about those asics
temps. Just checked a lightly-populated 9-slot 720C-10GE, w/ inlet at 23C
and the sensors in question are at 34C, 49C, and 51C. 

Comparing similarly configured (and situated) 4 and 9 slots, all of them
seem consistent, so no need to be suspect of the smaller chassis.