#33 reduce old server- & healthcheck data

Zlúčené

tunefish mergnuté 3 commitov z hostbbq/feature/data-cleanup do hostbbq/master 1 rok pred

Autor	SHA1 Správa	Dátum
Christian Kahlau	cba74d7fd4 reduce health check data: remove after 3M	1 rok pred
Christian Kahlau	d42eb21d85 reducing server data: implemented new all-in-one method	1 rok pred
Christian Kahlau	e3e386dbea first draft: reduce server metrics data	1 rok pred