Add prefix listing in mongodb_store.go #1
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What problem are we solving?
Mongodb filer not supported ListDirectoryPrefixedEntries method on database level, which will work faster on folders with hight files count.
How are we solving the problem?
Implemented ListDirectoryPrefixedEntries using mongodb regex search. Regex search by prefix uses index while executed, so searching time is ok.
How is the PR tested?
Run local aio deployment with mongodb filer store setted up. Confirm same beheviour with prefixFilterEntries version (when err ErrUnsupportedListDirectoryPrefixed raised)