Stats Pusher submits multiple metrics

[anjackson]

I think this is a bug in the Stats Pusher, in that the same metric turns up multiple times with different labels, or maybe I'm using it wrong?

After specifying one additional metric, it turns up twice, once under each top-level key:

trackdb_numFound_rr_logs{instance="solr8",job="cdx_oa_wayback",label="logs"}
trackdb_numFound_rr_logs{instance="solr8",job="trackdb",label="logs"}