[c-nsp] ISR4431 memory usage

[Juergen Marenda]

> Thanks Juergen 
> - Did you notice any significant increase in ram utilisation once you
enabled the 2 full tables?  
> (i.e. ours is currently sitting at ~83%, base conf)....or did memory usage
not change that much
> (i.e. it was "reallocated" from other processes)

One Pair of them:
46.9% (1.62 GB) of 3.46 GB used
47.0% (1.63 GB) of 3.46 GB used
started after reload at 37% and increases 1% per month 
Cisco IOS Software, ISR Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version
15.5(1)S1, RELEASE SOFTWARE (fc1)

Other Pair:
37.6% (1.30 GB) of 3.47 GB used
36.2% (1.25 GB) of 3.47 GB used
few variations +-1% since last reload 9 months ago 
Cisco IOS Software, ISR Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version
15.4(3)S3, RELEASE SOFTWARE (fc1)

Third set:
40.7% (1.41 GB) of 3.47 GB used
40.7% (1.41 GB) of 3.47 GB used
started with 39,7 5 month ago, so 0,2% grow per month 
Cisco IOS Software, ISR Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version
15.4(3)S4, RELEASE SOFTWARE (fc3) 

Looks like I must check the first pair.
Why the heck is it running a ...1... release
while all were installed with 15.4(3)S_latest_
... found ... Customer did that upgrade by himself.

Juergen