This patch adds a config-server serverStatus metric “shardedIndexConsistency” with the
subfield "numShardedCollectionsWithInconsistentIndexes" (NumberLong).
Metrics should be added that can be used to determine when shards do not all have the same indexes for a sharded collection.
Add metrics tracking how often shards have inconsistent indexes
Investigate changes in SERVER-44916: Test and document a pipeline to find inconsistent indexes