zeppelin git commit: [ZEPPELIN-3014] NPE bug fix and Error message enhancement with Kylin Interpreter

Repository: zeppelin Updated Branches: refs/heads/master 3505625c2 -> 549bce673 [ZEPPELIN-3014] NPE bug fix and Error message enhancement with Kylin Interpreter ### What is this PR for? A few sentences describing the overall goals of the pull request's commits. First time? Check out the

zeppelin git commit: [HOTFIX]: Fix IPythonInterpreter unit test

Repository: zeppelin Updated Branches: refs/heads/master 4a679fc05 -> 3505625c2 [HOTFIX]: Fix IPythonInterpreter unit test ### What is this PR for? This is for hotfix of `IPythonInterpreter` unit test failure. Just specify the version of ipython in `install_external_dependencies.sh`,