neutron 18.0.0 release

meta:version: 18.0.0
meta:diff-start: 17.0.0.0rc1
meta:series: wallaby
meta:release-type: release
meta:pypi: no
meta:first: yes
meta:release:Author: Hervé Beraud <hberaud@redhat.com>
meta:release:Commit: Hervé Beraud <hberaud@redhat.com>
meta:release:Change-Id: Ia6d79df224a792915976864857fe2271e031b54d
meta:release:Code-Review+1: Radosław Piliszek <radoslaw.piliszek@gmail.com>
meta:release:Code-Review+1: Slawek Kaplonski <skaplons@redhat.com>
meta:release:Code-Review+1: Yasufumi Ogawa <yasufum.o@gmail.com>
meta:release:Code-Review+1: Lingxian Kong <anlin.kong@gmail.com>
meta:release:Code-Review+1: Andrey Pavlov <andrey.mp@gmail.com>
meta:release:Code-Review+1: Takashi Kajinami <tkajinam@redhat.com>
meta:release:Code-Review+1: Carl caihui <cai.hui@zte.com.cn>
meta:release:Code-Review+1: Rafael Weingartner <rafael@apache.org>
meta:release:Code-Review+1: Xinran WANG <xin-ran.wang@intel.com>
meta:release:Code-Review+1: chenker <chen.ke14@zte.com.cn>
meta:release:Code-Review+1: 刘雪峰 <liu.xuefeng1@zte.com.cn>
meta:release:Code-Review+1: Martin Chacon Piza <martin@chaconpiza.com>
meta:release:Code-Review+1: Rico Lin <ricolin@ricolky.com>
meta:release:Code-Review+1: Balazs Gibizer <balazs.gibizer@est.tech>
meta:release:Code-Review+1: Matthias Runge <mrunge@redhat.com>
meta:release:Code-Review+1: Douglas Mendizábal <dmendiza@redhat.com>
meta:release:Code-Review+1: Michael Johnson <johnsomor@gmail.com>
meta:release:Code-Review+1: Gregory Thiemonge <gthiemon@redhat.com>
meta:release:Code-Review+1: Maysa de Macedo Souza <maysa.macedo95@gmail.com>
meta:release:Code-Review+1: Adrian Turjak <adriant@catalystcloud.nz>
meta:release:Code-Review+1: Akihiro Motoki <amotoki@gmail.com>
meta:release:Code-Review+1: Lucian Petrut <lpetrut@cloudbasesolutions.com>
meta:release:Code-Review+1: Goutham Pacha Ravi <gouthampravi@gmail.com>
meta:release:Code-Review+1: Brian Rosmaita <rosmaita.fossdev@gmail.com>
meta:release:Code-Review+1: Abhishek Kekane <akekane@redhat.com>
meta:release:Code-Review+2: Hervé Beraud <herveberaud.pro@gmail.com>
meta:release:Code-Review+2: Elod Illes <elod.illes@est.tech>
meta:release:Workflow+1: Hervé Beraud <herveberaud.pro@gmail.com>
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