pbr 5.7.0 release

meta:version: 5.7.0
meta:diff-start: -
meta:series: independent
meta:release-type: release
meta:pypi: yes
meta:first: no
meta:release:Author: Clark Boylan <clark.boylan@gmail.com>
meta:release:Commit: Clark Boylan <clark.boylan@gmail.com>
meta:release:Change-Id: If3c26c0b7e4d1fd81a801fcb97d4d046825d4aa4
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: Elod Illes <elod.illes@est.tech>
-----BEGIN PGP SIGNATURE-----

iI8EABYIADcWIQQZdOU0SAwSEkzcK7NjZDqHKHFYCQUCYYOmcBkcaW5mcmEtcm9v
dEBvcGVuc3RhY2sub3JnAAoJEGNkOococVgJodgA+gKeipJWyKnZAP1Az3vfpGZH
3GvyNy1VObVOWXyw8kRiAQD97dmluTl4It9Qy/ISsJGYnyU41LzufRZXALuQX2a/
Bw==
=SnGU
-----END PGP SIGNATURE-----