postgres_exporter shows wrong version

[bon3o]

When checking postgres_exporter version in http output it shows value 0.0.1 on the latest buld. As I can see this version is defined in variables in https://github.com/wrouesnel/postgres_exporter/blob/master/cmd/postgres_exporter/postgres_exporter.go on line 41 & 44.
Can you please fix this.

[mrkeuz]

Note: postgres_exporter --version prints correct version. But metric postgres_exporter_build_info show wrong value.

[mcwanek]

The latest build from postgres_exporter-0.9.0.linux-amd64.tar.gz reports postgres_exporter 0.0.1-rev (built with go1.15.8) when you run postgres_exporter --version. Have not deployed it yet to check what postgres_exporter_build_info shows.

Current version I'm running reports postgres_exporter v0.8.0-4-g3ecfd46 (built with go1.11.2) at the command line, and version="0.0.1" for the metric.

[SuperQ]

This is fixed by #494, but we haven't cut a new release.

[mbanck]

@SuperQ There's been a release (0.10.0) since, so this should be closed.