neutron 17.2.1 release

meta:version: 17.2.1
meta:diff-start: -
meta:series: victoria
meta:release-type: release
meta:pypi: no
meta:first: no
meta:release:Author: Slawek Kaplonski <skaplons@redhat.com>
meta:release:Commit: Slawek Kaplonski <skaplons@redhat.com>
meta:release:Change-Id: I44b055ad48795d9ad9674ab282f50fedf4b59ece
meta:release:Code-Review+1: Rodolfo Alonso <ralonsoh@redhat.com>
meta:release:Code-Review+2: Hervé Beraud <herveberaud.pro@gmail.com>
meta:release:Code-Review+1: Lajos Katona <katonalala@gmail.com>
meta:release:Code-Review+2: Elod Illes <elod.illes@est.tech>
meta:release:Workflow+1: Elod Illes <elod.illes@est.tech>
-----BEGIN PGP SIGNATURE-----

iI8EABYIADcWIQRPTYLdON8aQ97bW9qRN+8OojYVuQUCYTtsOhkcaW5mcmEtcm9v
dEBvcGVuc3RhY2sub3JnAAoJEJE37w6iNhW5bN4A/Rexd7XCK1a/44wOBz744eTp
P2MTGs6nravmHNCWZbB2AP9TWDpeoqLQDwxqmYXAcvKzWcfGph0bz/8m1TIpGLbA
Dw==
=eVp3
-----END PGP SIGNATURE-----