LIVEOAK-312 Windows firewall alerts during build (tests) on Windows

 - replaced embedmongo-maven-plugin with MongoLauncher
   - MongoLauncher is triggered if system property mongo.host is set to 'localhost' or '127.0.0.1'
   - system property mongo.port is optional, if not set port will default to 27017
   - triggering logic is in AbstractTestCase, and inherited by all test classes
   - data is stored in module's target/data directory
   - logs are written to module's target/data/mongod.log