Update changelog for 3.0.4 #189

Job	Run time
lint-unit / markdown-link-check	21s
lint-unit / check-metadata	0s
lint-unit / cookstyle	33s
lint-unit / markdownlint-cli2	5s
lint-unit / rspec	35s
lint-unit / yamllint	7s
integration (centos-7, default)	1m 31s
integration (centos-7, config)	2m 1s
integration (centos-8, default)	30s
integration (centos-8, config)	31s
integration (centos-stream-8, default)	2m 17s
integration (centos-stream-8, config)	4m 40s
integration (fedora-latest, default)	1m 46s
integration (fedora-latest, config)	1m 15s
integration (debian-10, default)	1m 30s
integration (debian-10, config)	1m 40s
integration (ubuntu-1804, default)	1m 56s
integration (ubuntu-1804, config)	1m 53s
integration (ubuntu-2004, default)	1m 38s
integration (ubuntu-2004, config)	2m 0s
	26m 49s

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