Geoffrey Beausire 5cb7987314 Fix relabaling collision when using exported label
When using both a label and the suffix+label in the
relabel config. It's possible that Prometheus remove
the suffx+label for no obvious reason. It's due to a
collision when merging labels from target and from
the sample.

Signed-off-by: Geoffrey Beausire <g.beausire@criteo.com>
2019-11-26 11:03:11 +01:00
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