/kind improvement
pr: #31271
fix: https://github.com/milvus-io/milvus/issues/31272
This pr add more metrics, which are:
Slow query count, which the duration considered as slow can be
configurable;
Number of deleted entities;
Number of entities per collection;
Number of loaded entities per collection;
Number of indexed entities;
Number of indexed entities, per collection, per index and whether it's a
vetor index;
Quota states (LongTimeTickDelay, MemoryExhuasted, DiskQuotaExhuasted)
per database;
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Signed-off-by: longjiquan <jiquan.long@zilliz.com>
ab059bb064