TR(restlet) upgrade restlet version to 2.3.9 (#187)

* Revert "Feat/wildfly-restlet-patch (#108)"

This reverts commit ed2c1d9f43ca2de21d4ca87a94818f526b70fb8f.

* chore(restlet) upgrade restlet version to 2.3.9

- including restlet/restlet-framework-java/pull/1229 to avoid patching restlet
- follow restlet changes (preventing to set the Content-range as we want)