Error go getting kubecfg

[Karl Skewes]

Tried install per docs.

$ go get github.com/bitnami/kubecfg
go get: github.com/bitnami/kubecfg@v0.15.1 requires
        contrib.go.opencensus.io/exporter/ocagent@v0.4.6 requires
        github.com/census-instrumentation/opencensus-proto@v0.1.0-0.20181214143942-ba49f56771b8: invalid pseudo-version: version before v0.1.0 would have negative patch number

$ go version
go version go1.13.8 linux/amd64

0.15.1 binary from Github Releases release works fine though

[Cam Hutchison]

This same problem has been raised against other repos that use opencensus - e.g. Azure/go-autorest#449

I think kubecfg just needs to update its contrib.go.opencensus.io/exporter/ocagent dependency and cut a new release.