SignalFx exporter changes to match code review associated with Splunk HEC exporter#255

Merged

bogdandrutu merged 2 commits intoopen-telemetry:masterfrom atoulme:fix_signalfx

Jun 6, 2020

+37-8

Commits on Jun 5, 2020

Bring changes to signalfx exporter matching code review comments of open-telemetry#246
atoulme
committed

Commits on Jun 6, 2020

Add test checking for invalid distribution without buckets
atoulme
committed