This adds `kolla_inspector_extra_kernel_options` to the
inspector.ipxe boot script. This is necessary to get the
inspector to collect the necessary LLDP data,
extra hardware data, etc. that is required for various
introspection rules to function correctly.
Change-Id: Ie7d6e1f12fb438e3b7e2c2a9de3ad8853947bee0
5e3986b88f