Issue #145: Upgrade findbugs plugin to 3.0.4.
Issue #145: Upgrade findbugs plugin to 3.0.4.

mk23/jmxproxy-test,mk23/jmxproxy,mk23/jmxproxy-test,mk23/jmxproxy,mk23/jmxproxy,mk23/jmxproxy,mk23/jmxproxy-test,mk23/jmxproxy,mk23/jmxproxy-test,mk23/jmxproxy-test,mk23/jmxproxy,mk23/jmxproxy-test