Move the Cobertura output up a level

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1538923 13f79535-47bb-0310-9956-ffa450edef68
Skip the Cobertura JARs

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1538924 13f79535-47bb-0310-9956-ffa450edef68