Update lint-unit to v3 #94

Job	Run time
lint-unit / markdownlint-cli2	6s
lint-unit / markdown-link-check	17s
lint-unit / check-metadata	0s
lint-unit / cookstyle	37s
lint-unit / rspec	41s
lint-unit / yamllint	11s
integration (amazonlinux-2, auto-master)	3m 20s
integration (amazonlinux-2, map-entry)	3m 17s
integration (amazonlinux-2, multi)	3m 18s
integration (amazonlinux-2, nfs)	3m 18s
integration (debian-9, auto-master)	1m 4s
integration (debian-9, map-entry)	1m 11s
integration (debian-9, multi)	58s
integration (debian-9, nfs)	58s
integration (debian-10, auto-master)	1m 12s
integration (debian-10, map-entry)	1m 34s
integration (debian-10, multi)	1m 37s
integration (debian-10, nfs)	1m 23s
integration (centos-7, auto-master)	2m 39s
integration (centos-7, map-entry)	1m 42s
integration (centos-7, multi)	2m 0s
integration (centos-7, nfs)	2m 1s
integration (centos-8, auto-master)	37s
integration (centos-8, map-entry)	36s
integration (centos-8, multi)	37s
integration (centos-8, nfs)	40s
integration (ubuntu-1804, auto-master)	1m 22s
integration (ubuntu-1804, map-entry)	1m 36s
integration (ubuntu-1804, multi)	1m 36s
integration (ubuntu-1804, nfs)	1m 34s
integration (ubuntu-2004, auto-master)	1m 26s
integration (ubuntu-2004, map-entry)	1m 41s
integration (ubuntu-2004, multi)	1m 43s
integration (ubuntu-2004, nfs)	1m 22s
	48m 14s

Provide feedback