[rancid] Inventory output patch for IOS

[heasley]

Mon, Jan 09, 2017 at 03:47:18PM +0000, David Jones:
> We upgraded from 3.1 to 3.6.1 recently and noticed that the Inventory output changed significantly breaking some parsing/reporting.  This also breaks from the Rancid standard for gathering/displaying the ! information.

The change was intentional; its more easily parsed by consumers and humans
and was also a work-around for a bug in a defunct ios release.  so, if you
wish to have the old format, you may extend rancid your own function to
format ShowInventory; see ciscoshtech in rancid.types.conf for an example.