init() and shutdown() deprecated in ZeppelinDriver
Zengine.configure() simplified
Fixning QTest
removed redundant method from test
Propagatin Dirver intance to each Z
ZeppelinDriver updated with lazy connection initialization
setupWebAppContext() extracted
ZeppelinServer cleaned up
.createFileWithContent() moved to UtilsForTest
Z,Q,L updated to depende on Driver instance on .execute(), ZQL depends on Aengine.getAvailableDrivers() on .compile() Test updated accrodingly