Changing to Mongo driver library

[ramonhpr]

That is the same PR #156 that @Hadrien-Cornier started but it seems to be outdated from repository latest updates.

After using his PR I was able to resolve issues that I was having on latest Mongodb version which were address on the following issues: #223 and #187.

Just paying attention to use --write-timeout to avoid errors like insertMany: context deadline exceeded if the amount of generated data is too big. link

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