Unconfigure command for Location

[avlec]

Ability to unconfigure previously configured location data. Currently the best you can do if you don't want to display this data any longer is to set it to some values that are useless, but that indicates that they might have been available at some time, or to restart lldpd or the system.

unconfigure [ports ethX [,…]] med location coordinate
unconfigure [ports ethX [,…]] med location address
unconfigure [ports ethX [,…]] med location elin