merging this for now so we don't forget about this, but ubiquiti seems to have expanded into switches & routers as well.
so in the future this class will either needs to be expanded or split into different ones (wifi/switch/router).
* Clean up EdgeOS and EdgeSwitch verion reporting
* Fixes EdgeOS hotfix versioning
* Also clean up AirOS firmware
* Support ER-12
* lowercase vendorname
* ident
* remove $Id$ tags from rcs software which has been retired
* make an effort to sync required mib docs with actual code
* sync even more docs with what code actually does
* some whitespace nits
* fixup example to use snmpv2 for all but the most ancient devices
* remove blurb to find more specific snmp::info classes for classes
which alrdy are as specific as they can get (eg snmp::info::layer3::vmware
doesn't need info on to find a specific module since there ain't none)
* rename all sub {vendor} strings to lowercase vendor, if cisco, juniper
and arista can be lowercase, so can be all the rest.
* fix tests
* spread some use warnings around
* use $ instead of @
* remove defines that are included via parent classes
* use strict + warnings
* remove alrdy included modules
* add comma after last list item
* typos
* mibs are found in our mib repo, not on the cisco site
* documentation fixes
* Include EdgeSwitch and update subs to support more UBNT devices
* Adjust EdgeRouter model logic to use only standard OIDs
* Comments and code cleanup
* cleanup
* Include ER Infinity
