Check_MK Werk 7196: agent_prism: Fixed wrong usage and capacity detection

ID: 7196 Title: agent_prism: Fixed wrong usage and capacity detection Component: Checks & agents Level: 1 Class: Bug fix Version: 1.6.0i1 The special agent used the API endpoint "storage.usage_bytes" and "storage.capacity_bytes" what leaded to wrong values. New used API endpoints are "storage.user_usage_bytes" and "storage.user_capacity_bytes".