fixes CAMEL-6169 so that the camelComponent.properties file is deployed into the maven repository; so folks can easily search for classifier "camelComponent" and extension "properties" to find all the camel components in a maven repo (from version 2.11 onwards)

git-svn-id: https://svn.apache.org/repos/asf/camel/trunk@1457229 13f79535-47bb-0310-9956-ffa450edef68