Revert #4586 (#4766)
Revert #4586 (#4766)

This breaks people if they are depending on the contents of
__address__ label.

Signed-off-by: Goutham Veeramachaneni <f622b879e4119c39400b0dd8e7398e15ef664d79@gmail.com>
keegancsmith/prometheus,keegancsmith/prometheus,prometheus/prometheus,prometheus/prometheus,alileza/prometheus,alileza/prometheus,kangwoo/prometheus,GoogleCloudPlatform/prometheus,keegancsmith/prometheus,kangwoo/prometheus,GoogleCloudPlatform/prometheus,GoogleCloudPlatform/prometheus,keegancsmith/prometheus,keegancsmith/prometheus,alileza/prometheus,Gouthamve/prometheus,prometheus/prometheus,alileza/prometheus,Gouthamve/prometheus,prometheus/prometheus,alileza/prometheus,kangwoo/prometheus,Gouthamve/prometheus,prometheus/prometheus,kangwoo/prometheus,GoogleCloudPlatform/prometheus,GoogleCloudPlatform/prometheus,Gouthamve/prometheus