Fix puppetserver ca sign with puppet 8. #1439

Job	Run time
Puppet / Static validations	23s
Puppet / 8 (Ruby 3.2)	7m 19s
Puppet / Puppet 8 - OracleLinux 9	4m 57s
Puppet / Puppet 8 - CentOS 9	4m 52s
Puppet / OpenVox 8 - OracleLinux 9	5m 12s
Puppet / OpenVox 8 - Debian 11	5m 9s
Puppet / Puppet 8 - Rocky 9	4m 50s
Puppet / Puppet 8 - Debian 12	2m 48s
Puppet / Puppet 8 - Ubuntu 22.04	5m 12s
Puppet / Puppet 8 - AlmaLinux 9	4m 34s
Puppet / OpenVox 8 - CentOS 9	4m 55s
Puppet / OpenVox 8 - Rocky 9	4m 37s
Puppet / OpenVox 8 - Debian 12	5m 5s
Puppet / OpenVox 8 - AlmaLinux 9	4m 43s
Puppet / Puppet 8 - Debian 11	4m 34s
Puppet / OpenVox 8 - Ubuntu 22.04	5m 18s
Puppet / Distro Puppet - Archlinux rolling	1m 32s
Puppet / Test suite	4s
	1h 16m 4s

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