[5.8] Pass down the serverVersion database connection option to Doctrine DBAL connection #28964
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I got into this issue while I was trying to run the migrations against Azure's MySQL
database. Azure's setup uses a gateway to proxy connections to the correct server,
which tricks PDO, because the gateway version is different than the actual server
that the migration runs. The server runs 5.7, while the gateway server runs a 5.6.
By using this option, we can manually pass the server version (5.7) and the correct
data types will be mapped. In my case, JSON columns were throwing an exception, even
though they are supported in the actual server.