Checkmk Werk 14775: Add overflow counters to status table

ID: 14775 Title: Add overflow counters to status table Component: Livestatus Level: 1 Class: New feature Version: 2.2.0i1 This adds 6 columns to the status table in livestatus: carbon_overflows, carbon_overflows_rate, influxdb_overflows, influxdb_overflows_rate, rrdcached_overflows, and rrdcached_overflows_rate. These columns display count of rate of data that could not be sent to their respective connections.