Add support for Dell Force10 S4810

[Deleted user]

Hi Barry,

we use Dell Force10 S4810 at BCIX and they working partly together with IXP-Manager,
but full support would be great. Older devices with NON-Dell and original Force10
firmware has different outputs, but we're in 2015 and FTOS = Dell Networking OS
Operating System Version 9.7.0.0 is on the horizon, now ;-)

Here the output:

snmpget -c <> -On -v 2c dell-f10-s4810 .1.3.6.1.2.1.1.1.0

.1.3.6.1.2.1.1.1.0 = STRING: "Dell Networking OS Operating System Version: 2.0 Application Software Version: 9.6(0.0) Series: S4810 Copyright (c) 1999-2014 by Dell Inc. All Rights Reserved. Build Time: Sun Sep 28 10:02:15 2014"

next:

snmpget -c <> -On -v 2c dell-f10-s4810 .1.3.6.1.2.1.1.2.0

.1.3.6.1.2.1.1.2.0 = OID: .1.3.6.1.4.1.6027.1.3.14

And the serial number:

snmpget -c <> -On -v 2c dell-f10-s4810 .1.3.6.1.2.1.47.1.1.1.1.11.2

.1.3.6.1.2.1.47.1.1.1.1.11.2 = STRING: "HADL112720025"