Binary LLDP data is bloating inventory causing us to disable its collection
by default. For other similar low-level information, such as PCI devices
or DMI data, we already use inspection collectors instead. Now that the
inventory format is shared with out-of-band inspection, having LLDP
there makes even less sense.
This change adds a new collector ``lldp`` to replace the now-deprecated
inventory field.
Change-Id: I56be06a7d1db28407e1128c198c12bea0809d3a3