Upgrade Stackdriver exporter version. (#591)

go.mod

@@ -5,7 +5,7 @@ require (
 	contrib.go.opencensus.io/exporter/jaeger v0.1.1-0.20190430175949-e8b55949d948
 	contrib.go.opencensus.io/exporter/ocagent v0.5.0
 	contrib.go.opencensus.io/exporter/prometheus v0.1.0
-	contrib.go.opencensus.io/exporter/stackdriver v0.12.2
+	contrib.go.opencensus.io/exporter/stackdriver v0.12.3-0.20190626200219-09504ed717c7 // TODO: pin a released version
 	contrib.go.opencensus.io/exporter/zipkin v0.1.1
 	contrib.go.opencensus.io/resource v0.1.1
 	github.com/DataDog/datadog-go v2.2.0+incompatible // indirect

go.sum

@@ -12,8 +12,8 @@ contrib.go.opencensus.io/exporter/ocagent v0.5.0 h1:TKXjQSRS0/cCDrP7KvkgU6SmILtF
 contrib.go.opencensus.io/exporter/ocagent v0.5.0/go.mod h1:ImxhfLRpxoYiSq891pBrLVhN+qmP8BTVvdH2YLs7Gl0=
 contrib.go.opencensus.io/exporter/prometheus v0.1.0 h1:SByaIoWwNgMdPSgl5sMqM2KDE5H/ukPWBRo314xiDvg=
 contrib.go.opencensus.io/exporter/prometheus v0.1.0/go.mod h1:cGFniUXGZlKRjzOyuZJ6mgB+PgBcCIa79kEKR8YCW+A=
-contrib.go.opencensus.io/exporter/stackdriver v0.12.2 h1:jU1p9F07ASK11wYgSTPKtFlTvTtCDj6R1d3nRt0ZHDE=
-contrib.go.opencensus.io/exporter/stackdriver v0.12.2/go.mod h1:iwB6wGarfphGGe/e5CWqyUk/cLzKnWsOKPVW3no6OTw=
+contrib.go.opencensus.io/exporter/stackdriver v0.12.3-0.20190626200219-09504ed717c7 h1:JLx6F8VdILk5M+2+xVZohpwN0TsC28F8WnJoPNNKogs=
+contrib.go.opencensus.io/exporter/stackdriver v0.12.3-0.20190626200219-09504ed717c7/go.mod h1:iwB6wGarfphGGe/e5CWqyUk/cLzKnWsOKPVW3no6OTw=
 contrib.go.opencensus.io/exporter/zipkin v0.1.1 h1:PR+1zWqY8ceXs1qDQQIlgXe+sdiwCf0n32bH4+Epk8g=
 contrib.go.opencensus.io/exporter/zipkin v0.1.1/go.mod h1:GMvdSl3eJ2gapOaLKzTKE3qDgUkJ86k9k3yY2eqwkzc=
 contrib.go.opencensus.io/resource v0.1.1 h1:4r2CANuYhKGmYWP02+5E94rLRcS/YeD+KlxSrOsMxk0=
@@ -137,8 +137,6 @@ github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfb
 github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.0 h1:kbxbvI4Un1LUWKxufD+BiE6AEExYYgkQLQmLFqA1LFk=
-github.com/golang/protobuf v1.3.0/go.mod h1:Qd/q+1AKNOZr9uGQzbzCmRO6sUih6GTPZv6a1/R87v0=
 github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg=
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/snappy v0.0.0-20160529050041-d9eb7a3d35ec/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
@@ -285,8 +283,6 @@ github.com/openzipkin/zipkin-go v0.1.6 h1:yXiysv1CSK7Q5yjGy1710zZGnsbMUIjluWBxtL
 github.com/openzipkin/zipkin-go v0.1.6/go.mod h1:QgAqvLzwWbR/WpD4A3cGpPtJrZXNIiJc5AZX7/PBEpw=
 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 v0.0.6 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=