[Java] TypeMappings/ImportMappings don't work for Date/DateTime

[cbornet]

This is because joda which is now the default overrides those values. It also happens if you choose java8 (for example, you choose java8 and want to change OffsetDateTime to Instant or ZonedDateTime).

Note : the workaround is to set dateLibrary to "custom" or "legacy" or "whatever"

[Klaboe]

1,5 years and no progress on this? 2.2.2 was released a year ago?

This is also an issue with SpringCodegen; where the the datelibrary is autimatically set if java8=true.

Using this work-around will mean that i get my ZonedDateTime and Jackson-annotations (I dont seem to be able to turn off the use of the gson-library in JavaClientCodegen), but java8 will not be active.

[webron]

@Klaboe PRs are more than welcome.