exporter/stackdriver: distribution range is not allowed

[SergeyKanzhelev]

From census-instrumentation/opencensus-csharp#110

I've tried using distribution aggregation with stackdriver exporter, but it does not work.
It looks like the same issue as in GO package - census-instrumentation/opencensus-go#143

[jacostro]

I encountered the same problem. Exception from Stackdriver client explicitly said that range is not supported yet, and this section in the documentation:
https://cloud.google.com/monitoring/api/ref_v3/rest/v3/TimeSeries#Distribution
says for range:

If specified, contains the range of the population values. The field must not be present if the count is zero. This field is presently ignored by the Stackdriver Monitoring API v3.

[cijothomas]

Closing as StackDriver exporter is not part of this repo, and the previous metrics api is removed.