Re-add Querier logging in Single Binary

[mattmendick]

A previous change (#2437) removed logging and metrics in single binary mode for the querier. We should restore this functionality to have better visibility into the querier.

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This issue has been automatically marked as stale because it has not had any activity in the past 60 days. It will be closed in 15 days if no further activity occurs. Thank you for your contributions.

[pracucci]

Metrics have been done in #2708, but I think logging still needs to be done. @jtlisi ?

[stale]

This issue has been automatically marked as stale because it has not had any activity in the past 60 days. It will be closed in 15 days if no further activity occurs. Thank you for your contributions.

[pracucci]

@jtlisi @mattmendick Is this issue still valid?

[jtlisi]

@pracucci Logging still needs to be done

[stale]

This issue has been automatically marked as stale because it has not had any activity in the past 60 days. It will be closed in 15 days if no further activity occurs. Thank you for your contributions.

[jtlisi]

still valid