When you run '-version' on the mongodb_exporter in PMM, I get the version of pmm-client and not the version of the actual mongodb_exporter:
The mongodb_exporter code above is actually 0.1.0.
I don't think we should do this because it adds a layer of confusion when issues with the exporter are reported. I think mongodb_exporter should be reporting the version of github.com/percona/mongodb_exporter, not pmm-client.
We could make the release versions of pmm-client and mongodb_exporter match if we want them to match, but I think the key is 'mongodb_exporter -version' reports a reliable version that can be traced back to github.com/percona/mongodb_exporter properly.