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                                            ZhangYoudong

fixbug SERVER-31687: Missing minvalid in sync source cause oplog full table scan all the time

See details in [SERVER-31687](https://jira.mongodb.org/browse/SERVER-31687) `$lte` condition may cause the oplog full scan, so we should just use `$gte`, and compare in the client side.

clientOptions doesn't apply on MongoClient

clientOptions doesn't apply on MongoClient, so WRITE_CONCERN config cannot take effect.