Bump contrib.go.opencensus.io/exporter/jaeger from 0.1.0 to 0.2.1

Bumps [contrib.go.opencensus.io/exporter/jaeger](https://github.com/census-ecosystem/opencensus-go-exporter-jaeger) from 0.1.0 to 0.2.1.
- [Release notes](https://github.com/census-ecosystem/opencensus-go-exporter-jaeger/releases)
- [Commits](https://github.com/census-ecosystem/opencensus-go-exporter-jaeger/compare/v0.1.0...v0.2.1)

---
updated-dependencies:
- dependency-name: contrib.go.opencensus.io/exporter/jaeger
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -3,7 +3,7 @@ module github.com/virtual-kubelet/virtual-kubelet
 go 1.15
 
 require (
-	contrib.go.opencensus.io/exporter/jaeger v0.1.0
+	contrib.go.opencensus.io/exporter/jaeger v0.2.1
 	contrib.go.opencensus.io/exporter/ocagent v0.7.0
 	github.com/bombsimon/logrusr v1.0.0
 	github.com/docker/spdystream v0.0.0-20170912183627-bc6354cbbc29 // indirect