OSGi tests for API, API-1.2 and CORE, using Apache Felix and Eclipse Equinox as embedded OSGi containers. Note that all tests except the API tests are @Ignore due to reported bugs.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1522753 13f79535-47bb-0310-9956-ffa450edef68