The L3 NDP proxy API definition was partially updated when ``is_filter``
was introduced. The ``name`` attribute already declared ``is_filter``,
but ``id``, ``project_id``, ``router_id``, ``port_id``, ``ip_address``,
and ``description`` did not. With filter-validation enabled, list
operations using query filters on those attributes return HTTP 400.
Add ``is_filter: True`` to the six remaining scalar attributes and
reformat the attribute map to match the multi-line style used in other
updated API definitions.
Related-Bug: #2167310
Assisted-By: Composer 2.5
Signed-off-by: Rodolfo Alonso Hernandez <ralonsoh@redhat.com>
Change-Id: I5dfacb08d0e0786f877ac53f02855354e15c3717