Backports: add keyring support #224

Job	Run time
Spec / Setup Test Matrix	30s
Spec / Spec tests (Puppet: ~> 7.24, Ruby Ver: 2.7)	54s
Spec / Spec tests (Puppet: ~> 8.0, Ruby Ver: 3.2)	46s
Acceptance / Setup Test Matrix	28s
Acceptance / Acceptance tests (Debian-10, puppet7-nightly)	6m 12s
Acceptance / Acceptance tests (Debian-10, puppet8-nightly)	6m 14s
Acceptance / Acceptance tests (Debian-11, puppet7-nightly)	5m 44s
Acceptance / Acceptance tests (Debian-11, puppet8-nightly)	6m 0s
Acceptance / Acceptance tests (Ubuntu-18.04, puppet7-nightly)	7m 6s
Acceptance / Acceptance tests (Ubuntu-18.04, puppet8-nightly)	7m 24s
Acceptance / Acceptance tests (Ubuntu-20.04, puppet7-nightly)	6m 59s
Acceptance / Acceptance tests (Ubuntu-20.04, puppet8-nightly)	7m 9s
Acceptance / Acceptance tests (Ubuntu-22.04, puppet7-nightly)	7m 11s
Acceptance / Acceptance tests (Ubuntu-22.04, puppet8-nightly)	7m 1s
Acceptance / Acceptance tests (Ubuntu-22.04-arm, puppet7-nightly)	1h 22m 38s
Acceptance / Acceptance tests (Ubuntu-22.04-arm, puppet8-nightly)	1h 24m 11s
	3h 56m 27s

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