pom.xml: exclude jetty from Hadoop core
pom.xml: exclude jetty from Hadoop core

Hadoop requires 6.1.14, we want 6.1.22.

Signed-off-by: Pierre-Alexandre Meyer <ff019a5748a52b5641624af88a54a2f0e46a9fb5@ning.com>

pierre/collector,pierre/collector,pierre/collector,pierre/collector,ning/collector,ning/collector,pierre/collector,ning/collector,pierre/collector,ning/collector,ning/collector