Don't regenerate label set for cached values.
Don't regenerate label set for cached values.

Gouthamve/prometheus,yanghongkjxy/prometheus,amorken/prometheus,prometheus/prometheus,amorken/prometheus,Conorbro/prometheus,yanghongkjxy/prometheus,alileza/prometheus,GoogleCloudPlatform/prometheus,AlekSi/prometheus,GoogleCloudPlatform/prometheus,Stackdriver/stackdriver-prometheus,kangwoo/prometheus,prometheus/prometheus,GoogleCloudPlatform/prometheus,keegancsmith/prometheus,keegancsmith/prometheus,alileza/prometheus,GoogleCloudPlatform/prometheus,keegancsmith/prometheus,amorken/prometheus,prometheus/prometheus,Gouthamve/prometheus,Gouthamve/prometheus,GoogleCloudPlatform/prometheus,alileza/prometheus,brancz/prometheus,brancz/prometheus,brancz/prometheus,Stackdriver/stackdriver-prometheus,AlekSi/prometheus,alileza/prometheus,kangwoo/prometheus,Conorbro/prometheus,Conorbro/prometheus,keegancsmith/prometheus,kangwoo/prometheus,AlekSi/prometheus,prometheus/prometheus,kangwoo/prometheus,Stackdriver/stackdriver-prometheus,Stackdriver/stackdriver-prometheus,keegancsmith/prometheus,amorken/prometheus,Gouthamve/prometheus,AlekSi/prometheus,alileza/prometheus,yanghongkjxy/prometheus,yanghongkjxy/prometheus,brancz/prometheus,Conorbro/prometheus,prometheus/prometheus