Exclude provided jackson libraries on wildfly 9

The jackson implementation provided by wildfly 9 is the version 2.5.1.
As this version of the library is afflicted by this bug
FasterXML/jackson-databind#735 and is loaded
by default we need to exclude it.

src/main/webapp/WEB-INF/jboss-deployment-structure.xml

@@ -0,0 +1,9 @@
+<jboss-deployment-structure>
+	<deployment>
+		<exclusions>
+			<!-- Exclude jackson implementation provided by Wildfly 9 (2.5.1)
+				because of https://github.com/FasterXML/jackson-databind/issues/735 -->
+			<module name="org.jboss.resteasy.resteasy-jackson2-provider" />
+		</exclusions>
+	</deployment>
+</jboss-deployment-structure>