Bug 1931504

.Setting `bluestore_cache_trim_max_skip_pinned` to `10000` enables trimming of the object’s metadata The least recently used (LRU) cache is used for the object’s metadata. Trimming of the cache is done from the least recently accessed objects. Objects that are pinned are exempted from eviction, which means they are still being used by Bluestore.. Previously, the configuration variable `bluestore_cache_trim_max_skip_pinned` controlled how many pinned objects were visited, thereby the scrubbing process caused objects to be pinned for a long time. When the number of objects pinned on the bottom of the LRU metadata cache became larger than `bluestore_cache_trim_max_skip_pinned` , then trimming of cache was not completed. With this release, you can set `bluestore_cache_trim_max_skip_pinned` to `10000` which is larger than the possible count of metadata cache. This enables trimming and the metadata cache size adheres to the configuration settings.