Jeff Zhang 3505625c26 [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`, otherwise latest ipython version will be installed, and the behavior may change. ### What type of PR is it? [Hot Fix] ### Todos * [ ] - Task ### What is the Jira issue? * ### How should this be tested? * CI pass ### Screenshots (if appropriate) ### Questions: * Does the licenses files need update? No * Is there breaking changes for older versions? No * Does this needs documentation? No Author: Jeff Zhang <zjffdu@apache.org> Closes #2703 from zjffdu/ipython_version and squashes the following commits: b4c7b42 [Jeff Zhang] HotFix: Fix IPythonInterpreter unit test		2017-12-13 18:45:35 +08:00
..
downloadLivy.sh	[ZEPPELIN-2876]. Integrate with Livy 0.4.0	2017-09-06 11:26:07 +08:00
downloadSpark.sh	[HOTFIX] Restore uninteded change of exit code in testing/dowloadSpark.sh	2016-12-05 20:08:57 +09:00
install_external_dependencies.sh	[HOTFIX]: Fix IPythonInterpreter unit test	2017-12-13 18:45:35 +08:00