* [Java] Add a new additional property to configure Jackson's `failOnUnknownProperties`
* Move `FAIL_ON_UNKNOWN_PROPERTIES` property to JavaClientCodegen
* Template `FAIL_ON_UNKNOWN_PROPERTIES` for other libraries beside retrofit2
* Default `failOnUnknownProperties` to false for all Java Client libraries
* Fix integration tests
Add the `failOnUnknownProperties: true` additional properties to generate the
expected mapper