This change installs two Ironic inspector plugins. The ``lldp_basic``
plugin was added to Ironic inspector in Ocata to process LLDP packets
stored in swift (https://review.openstack.org/#/c/406496/). The
``local_link_connection`` plugin was added in Newton but had not been
installed (https://review.openstack.org/#/c/321082/). It sets the
port_id and switch_id on Ironic ports from LLDP data.
Change-Id: I5c2734e77a16360f9688a0a389211e3882941eb0
(cherry picked from commit c55910d40c)