Update stackdriver exporter version. (#552)

Author: songy23

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 v0.11.1-0.20190509233537-79f9672ef5ad // TODO: pin a released version
+	contrib.go.opencensus.io/exporter/stackdriver v0.11.1
 	contrib.go.opencensus.io/exporter/zipkin v0.1.1
 	github.com/DataDog/datadog-go v2.2.0+incompatible // indirect
 	github.com/DataDog/opencensus-go-exporter-datadog v0.0.0-20181026070331-e7c4bd17b329
@@ -56,7 +56,7 @@ require (
 	go.uber.org/atomic v1.3.2 // indirect
 	go.uber.org/multierr v1.1.0 // indirect
 	go.uber.org/zap v1.9.1
-	google.golang.org/api v0.4.0
+	google.golang.org/api v0.5.0
 	google.golang.org/grpc v1.20.1
 	gopkg.in/DataDog/dd-trace-go.v1 v1.12.1 // indirect
 	gopkg.in/alexcesaro/statsd.v2 v2.0.0 // 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 v0.11.1-0.20190509233537-79f9672ef5ad h1:pv37WGDobHC1YkQlp2bNikrDQry3EW2fPM43imfYs2k=
-contrib.go.opencensus.io/exporter/stackdriver v0.11.1-0.20190509233537-79f9672ef5ad/go.mod h1:z3MaRZr8oewP2lkKBnTpEfKzvCLvw55u4XtWL93L3yE=
+contrib.go.opencensus.io/exporter/stackdriver v0.11.1 h1:vs1vKaR13vgokRuLL+pF7fm5gxe9OEaOX+7KhXmh5cc=
+contrib.go.opencensus.io/exporter/stackdriver v0.11.1/go.mod h1:OVGcYsPSBQnQONDG+Gn3WiwIp6K+wL73TUjVEFb9iAI=
 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 v0.0.0-20190131005048-21591786a5e0 h1:ICrSnXeuT4427bpR8X9I7GxiyT4X5qgLtFT7m1IjK2c=
@@ -474,6 +474,8 @@ google.golang.org/api v0.0.0-20180910000450-7ca32eb868bf/go.mod h1:4mhQ8q/RsB7i+
 google.golang.org/api v0.0.0-20181017004218-3f6e8463aa1d/go.mod h1:4mhQ8q/RsB7i+udVvVy5NUi08OU8ZlA0gRVgrF7VFY0=
 google.golang.org/api v0.4.0 h1:KKgc1aqhV8wDPbDzlDtpvyjZFY3vjz85FP7p4wcQUyI=
 google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
+google.golang.org/api v0.5.0 h1:lj9SyhMzyoa38fgFF0oO2T6pjs5IzkLPKfVtxpyCRMM=
+google.golang.org/api v0.5.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
 google.golang.org/appengine v1.1.0 h1:igQkv0AAhEIvTEpD5LIpAfav2eeVO9HBTjvKHVJPRSs=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0 h1:/wp5JvzpHIxhs/dumFmF7BXTf3Z+dd4uXta4kVyO508=