CAMEL-5983: Better make use of ProducerTemplate.sendBody() instead of ProducerTemplate.request() API so that effectively an exception is thrown and not only gets attached on the returned Exchange. This would better match to the original purpose of this test.

git-svn-id: https://svn.apache.org/repos/asf/camel/trunk@1436759 13f79535-47bb-0310-9956-ffa450edef68