[c-nsp] ASR920 Software Upgrade 2019

[James Jun]

> 
> We found that to be quite a long time compared to the last time we ever did
> a similar upgrade 2 years ago.
> 
> Has anyone  had a similar experience and should this be the case?
> 

Depends on the code releases you're crossing, it will need to run FPGA UPDATE and
reload the box for 2nd time.  And if your device has been running for a while, fsck
may also need to run on boot, delaying the reload time further.

So yea, this is normal and expected.

James