FELIX-3985 - ConfigSpiOsgi should be registered by default

The ConfigSpi now registers upon activation with default config

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1459226 13f79535-47bb-0310-9956-ffa450edef68
FELIX-3935 - Testcases for JAAS integration

Adding testcases for following scenarios
-- registration of WebConsole plugin if HTTP service is present
-- replacing the global config via explicit setting

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1459227 13f79535-47bb-0310-9956-ffa450edef68