Add support and tests for Rocky and AlmaLinux. Supersedes #185 #268

Job	Run time
Test role on different ansible versions (2.12, pdns-46)	7m 55s
Test role on different ansible versions (2.12, pdns-47)	10m 38s
Test role on different ansible versions (2.12, pdns-48)	10m 32s
Test role on different ansible versions (2.12, pdns-master)	10m 34s
Test role on different ansible versions (2.12, pdns-os-repos)	5m 51s
Test role on different ansible versions (2.12, systemd-no-overrides)	2m 25s
Test role on different ansible versions (2.13, pdns-46)	8m 26s
Test role on different ansible versions (2.13, pdns-47)	10m 44s
Test role on different ansible versions (2.13, pdns-48)	10m 34s
Test role on different ansible versions (2.13, pdns-master)	10m 34s
Test role on different ansible versions (2.13, pdns-os-repos)	5m 50s
Test role on different ansible versions (2.13, systemd-no-overrides)	2m 32s
Test role on different ansible versions (2.14, pdns-46)	8m 0s
Test role on different ansible versions (2.14, pdns-47)	10m 22s
Test role on different ansible versions (2.14, pdns-48)	9m 59s
Test role on different ansible versions (2.14, pdns-master)	10m 18s
Test role on different ansible versions (2.14, pdns-os-repos)	5m 38s
Test role on different ansible versions (2.14, systemd-no-overrides)	2m 22s
	2h 23m 14s

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