update to latest maven plugin version esp. for static code analysis.
checkstyle plugin 2.15 fixes some isses with java 8.
perhaps we can update to latest cobartura 2.7 for java 8 compatibility as well - in the last update round beginning of march '15 we had to skip it because of compatibility problems with felix bundle plugin baseline check and some unit test runs.
for maven bundle plugin we should skip version 2.5.4 due to a known issue, perhpaps update to a intermediate release of the latest version to get the latest bndlib 2.4.1