Checkmk Werk 15156: Send metrics to InfluxDB in batch

ID: 15156 Title: Send metrics to InfluxDB in batch Component: Core & setup Level: 1 Class: New feature Version: 2.2.0i1 Metrics are collected and sent together after either about 5000 metrics have been enqueued or 10 seconds, whichever comes first. This follows the "Optimize writes to InfluxDB" best practice documented on influxdata.com and should improve the overall performance of the connector.