Support Prometheus Pushgateway #14346
Description
It would be nice to bring the Prometheus push-gateway functionality that was implemented in micrometer-legacy into spring boot 2.x. See
- add autoconfiguration for prometheus push-gateway micrometer-metrics/micrometer#394
- Bring back PushGateway functionality / autoconfiguration for SB 2.x micrometer-metrics/micrometer#830
- https://stackoverflow.com/questions/49779684/how-to-export-metrics-to-prometheus-via-pushgateway-using-spring-boot-2-0
The push-gateway is handy for batch-programs (e.g. non-longrunning processes)