Update metadata for 5.1.15 #172

Job	Run time
lint-unit / rspec	41s
lint-unit / cookstyle	31s
lint-unit / markdown-link-check	1m 29s
lint-unit / markdownlint-cli2	2s
lint-unit / yamllint	7s
lint-unit / check-metadata	0s
integration (almalinux-8, repository)	2m 19s
integration (almalinux-8, package)	2m 5s
integration (centos-7, repository)	39s
integration (centos-7, package)	37s
integration (centos-stream-8, repository)	33s
integration (centos-stream-8, package)	33s
integration (debian-10, repository)	34s
integration (debian-10, package)	1m 17s
integration (debian-11, repository)	2m 29s
integration (debian-11, package)	2m 1s
integration (fedora-latest, repository)	2m 12s
integration (fedora-latest, package)	2m 19s
integration (rockylinux-8, repository)	2m 40s
integration (rockylinux-8, package)	2m 43s
integration (ubuntu-1804, repository)	32s
integration (ubuntu-1804, package)	35s
integration (ubuntu-2004, repository)	2m 37s
integration (ubuntu-2004, package)	1m 52s
	31m 27s

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