Add suport for replaceOne operation

[jakubwladyslaw]

Spring Data mongoDB doesn't support replaceOne, but mongoDB driver support it.
https://www.mongodb.com/docs/manual/reference/method/db.collection.replaceOne/

[christophstrobl]

Thank you @jakubwladyslaw for getting in touch. Before we add another method (plus overloads) to MongoOperations and potentially ReactiveMongoOperations please tell us a little more about the issue that it solves. Like, why is the existing save method not sufficient.

[jakubwladyslaw]

Save works well when i have id, but in my case id could change.
Without replace i can use findAndReplace, but this method fetch Document from mongodb unnecessary.

[christophstrobl]

Thanks @jakubwladyslaw - fair enough, we'll take if from here.