MySQL timezone support

[fed239]

Is it possible to make MySQL backend timezone aware? I set jdbc_connection_url_pattern like the following, but still all datetimes coming from DB backend are naive.

jdbc_connection_url_pattern = 'jdbc:mysql://%(HOST)s:%(PORT)s/%(NAME)s?zeroDateTimeBehavior=convertToNull&useTimezone=true&useLegacyDatetimeCode=true&noTimezoneConversionForTimeType=true&serverTimezone=Europe/Helsinki&noTimezoneConversionForDateType=true&useJDBCCompliantTimezoneShift=true'