[pkg-go] prometheus-mysqld-exporter is marked for autoremoval from testing

[Debian testing autoremoval watch]

prometheus-mysqld-exporter 0.9.0+ds-3 is marked for autoremoval from testing on 2017-06-02

It (build-)depends on packages with these RC bugs:
860646: golang-github-jacobsa-ogletest: FTBFS on i386: dh_auto_test: go test -v -p 1 github.com/jacobsa/ogletest github.com/jacobsa/ogletest/srcutil github.com/jacobsa/ogletest/test_cases github.com/jacobsa/ogletest/test_cases/mock_image returned exit code 1