Removed unused package jackson-xc from pom.xml

Change-Id: I1228b6a8210652af2be1a1b05980782ac51d2adc
Signed-off-by: NeevoLima <peter.merkert@gmx.de>
Updates to Jackson JSON 2.3 (from 1.9.13). The Object reference is
better supported in Jackson 2.x.

Needed to update the CustomObjectWrapper to the new packages.
Needed to update all the Test classes with their Client configuration to
use the new JacksonJaxbJsonProvider.

Change-Id: I65811365f133e5788bda9c0a536b1948de1540f1
Signed-off-by: NeevoLima <peter.merkert@gmx.de>