zeppelin git commit: ZEPPELIN-3345. Don't load interpreter setting when it exist interpreter.json but no interpreter-setting.json found

Repository: zeppelin Updated Branches: refs/heads/master 90b27cb67 -> a63f04147 ZEPPELIN-3345. Don't load interpreter setting when it exist interpreter.json but no interpreter-setting.json found ### What is this PR for? It usually happens in dev enviroment. e.g. I have livy interpreter in in

zeppelin git commit: ZEPPELIN-3343. Interpreter Hook is broken

Repository: zeppelin Updated Branches: refs/heads/branch-0.8 45d07668f -> 27fee5469 ZEPPELIN-3343. Interpreter Hook is broken Currently the interpreter hook mechanism is broken. This PR fix this issue and also add unit test for interpreter hook, (including global hook and note level hook) [

zeppelin git commit: ZEPPELIN-3343. Interpreter Hook is broken

Repository: zeppelin Updated Branches: refs/heads/master c6f7f2bdb -> 90b27cb67 ZEPPELIN-3343. Interpreter Hook is broken ### What is this PR for? Currently the interpreter hook mechanism is broken. This PR fix this issue and also add unit test for interpreter hook, (including global hook and