gaschler a338b2e339 Collect metrics with Prometheus C++ Client (#916) ... RFC=[0014](https://github.com/googlecartographer/rfcs/blob/master/text/0014-monitoring.md)		2018-02-19 18:11:59 +01:00
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prometheus	Collect metrics with Prometheus C++ Client (#916)	2018-02-19 18:11:59 +01:00