Upgrade promreceiver version. (#517)

Author: songy23

go.mod

@@ -46,7 +46,7 @@ require (
 	github.com/opentracing/opentracing-go v1.0.2 // indirect
 	github.com/openzipkin/zipkin-go v0.1.3
 	github.com/orijtech/prometheus-go-metrics-exporter v0.0.3-0.20190313163149-b321c5297f60
-	github.com/orijtech/promreceiver v0.0.5
+	github.com/orijtech/promreceiver v0.0.6
 	github.com/peterbourgon/diskv v2.0.1+incompatible // indirect
 	github.com/philhofer/fwd v1.0.0 // indirect
 	github.com/pkg/errors v0.8.0

go.sum

@@ -324,8 +324,8 @@ github.com/openzipkin/zipkin-go v0.1.3 h1:36hTtUTQR/vPX7YVJo2PYexSbHdAJiAkDrjuXw
 github.com/openzipkin/zipkin-go v0.1.3/go.mod h1:NtoC/o8u3JlF1lSlyPNswIbeQH9bJTmOf0Erfk+hxe8=
 github.com/orijtech/prometheus-go-metrics-exporter v0.0.3-0.20190313163149-b321c5297f60 h1:vN7d/Zv6aOXqhspiqoEMkb6uFHNARVESmYn5XtNeyrk=
 github.com/orijtech/prometheus-go-metrics-exporter v0.0.3-0.20190313163149-b321c5297f60/go.mod h1:+Mu9w51Uc2RNKSUTA95d6Pvy8cxFiRX3ANRPlCcnGLA=
-github.com/orijtech/promreceiver v0.0.5 h1:MxolWlTIe5CDyGKxYaqTK5eummYrZgMWOXx5Lg+JaGg=
-github.com/orijtech/promreceiver v0.0.5/go.mod h1:JYRuGbKzdsEv4QcKeFBAFgs8KHmz+m7fv0l1moal21c=
+github.com/orijtech/promreceiver v0.0.6 h1:2e3OEMZEiQkDk6/xoqmC8MIpkf2XDEcG7i0kFgxtQRY=
+github.com/orijtech/promreceiver v0.0.6/go.mod h1:JYRuGbKzdsEv4QcKeFBAFgs8KHmz+m7fv0l1moal21c=
 github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c h1:Lgl0gzECD8GnQ5QCWA8o6BtfL6mDH5rQgM4/fX3avOs=
 github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
 github.com/pelletier/go-toml v1.2.0 h1:T5zMGML61Wp+FlcbWjRDT7yAxhJNAiPPLOFECq181zc=