Speedup tests: execute OS independent code once #773

Job	Run time
Puppet / Static validations	37s
Puppet / Puppet 8 - Debian 11	1m 56s
Puppet / 8 (Ruby 3.2)	2m 17s
Puppet / Puppet 7 - Debian 11	2m 1s
Puppet / 7 (Ruby 2.7)	2m 35s
Puppet / Puppet 8 - Debian 12	1m 54s
Puppet / Puppet 7 - Debian 12	1m 55s
Puppet / Puppet 8 - Ubuntu 20.04	2m 8s
Puppet / Puppet 7 - Ubuntu 20.04	2m 3s
Puppet / Puppet 8 - Ubuntu 22.04	1m 55s
Puppet / Puppet 7 - Ubuntu 22.04	1m 54s
Puppet / Puppet 8 - CentOS 9	2m 5s
Puppet / Puppet 7 - CentOS 9	2m 34s
Puppet / Puppet 8 - AlmaLinux 8	1m 54s
Puppet / Puppet 7 - AlmaLinux 8	1m 59s
Puppet / Puppet 8 - AlmaLinux 9	2m 4s
Puppet / Puppet 7 - AlmaLinux 9	2m 3s
Puppet / Puppet 8 - Rocky 8	1m 58s
Puppet / Puppet 7 - Rocky 8	2m 3s
Puppet / Puppet 8 - Rocky 9	1m 53s
Puppet / Puppet 7 - Rocky 9	2m 2s
Puppet / Puppet 8 - OracleLinux 8	3m 0s
Puppet / Puppet 7 - OracleLinux 8	2m 56s
Puppet / Puppet 8 - OracleLinux 9	2m 10s
Puppet / Puppet 7 - OracleLinux 9	2m 11s
Puppet / Distro Puppet - Archlinux rolling	2m 25s
Puppet / Test suite	1s
	54m 33s

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