pom.xml: updates for release 0.5.33
pom.xml: updates for release 0.5.33

Upgrade killbill-client.version to 0.0.8

Signed-off-by: stephane brossier <36bd4f73be32ed7262c164e7ee72163e7543989e@ning.com>

aeq/killbill-oss-parent,killbill/killbill-oss-parent,rocketlawyer/killbill-oss-parent,maguero/killbill-oss-parent,andrenpaes/killbill-oss-parent,kares/killbill-oss-parent