Propagate scheduler queue time to query stats #6971
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What this PR does:
Propagates scheduler queue time to querier using a new protobuf field. Queue time is returned to query-frontend with the response and logged as
queue_time_secondsquery stats field. If the query was sharded, the longest shard's queue time is logged.Which issue(s) this PR fixes:
Fixes #
Checklist
CHANGELOG.mdupdated - the order of entries should be[CHANGE],[FEATURE],[ENHANCEMENT],[BUGFIX]