Checkmk Werk 14205: Legacy check_bi_aggr check: Improved performance

ID: 14205 Title: Legacy check_bi_aggr check: Improved performance Component: BI Level: 1 Class: Bug fix Version: 2.1.0p31 The changeover from the (now deprecated) webapi to the REST API introduced a performance problem. Instead of fetching/computing the state of the single aggregation, all aggregations were computed. This lead to apache performance problems, especially in environments with a large amount of aggregations.