Modify build_info query to also look for build_info_total

[brettimus]

Because of #38, the build_info functionality does not work out-of-the-box

What's happening is that opentelemetry-python is converting the gauge to a counter, thus the metric name is build_info_total instead of build_info.

We could modify the queries to accommodate this issue, until it's resolved upstream:

* on (instance, job) group_left(version, commit) (
  last_over_time({
    __name__=~"build_info(_total)?"
  }[${interval}])
  or on (instance, job) up
)