Checkmk Werk 13083: cleanup only very old activations

ID: 13083 Title: cleanup only very old activations Component: Core & setup Level: 2 Class: Bug fix Version: 2.1.0i1 During the process of "activating changes" it was possible in certain situations that the activation-ID would disappear before the activation could have a chance to complete. Investigations showed that a cleanup job removed these activations before they even started. This could then manifest itself as the error: "Missing Activation ID" or a response with a 404 status in the REST API. This werk fixes this problem by changing the cleanup job to only consider activations which are at least an hour (3600 seconds) old. There are no further changes needed for this to take effect.