add logback as test dependency and skip unit tests during 'mvn package' (at least until they are fixed)
add logback as test dependency and skip unit tests during 'mvn package' (at least until they are fixed)

git-svn-id: 46308aa6df3a13aea5930e6665b35c8b83c3a711@548 9fbd0cf9-a10c-0410-82c1-be8c084f3200

duck1123/java-xmltooling