server_facts: Switch from legacy to structured facts #277

Job	Run time
spec (windows-latest ruby 3.2 \| puppet ~> 8.0) / spec	2m 45s
spec (windows-latest ruby 2.7 \| puppet ~> 7.0) / spec	2m 57s
spec (ubuntu-latest ruby 3.2 \| puppet ~> 8.0) / spec	27s
spec (ubuntu-latest ruby 2.7 \| puppet ~> 7.0) / spec	42s
	6m 51s

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