[ZEPPELIN-4675] Add commons-configuration2 for shiro string interpolation

[Reamer]

What is this PR for?

Adding the library commons-configuration2 with is needed by Apache/shiro for string interpolation.
String interpolation is useful, when working with containers. You can interpolate several values, when starting the container.

Guide for String interpolation with shiro: https://stormpath.com/blog/string-interpolation-apache-shiro
Shiro-Commit with includes string interpolation: apache/shiro@af75fb5

What type of PR is it?

• Feature

Todos

• - Task

What is the Jira issue?

• https://issues.apache.org/jira/browse/ZEPPELIN-4675

Questions:

• Does the licenses files need update? No
• Is there breaking changes for older versions? No
• Does this needs documentation? No

[Reamer]

Travis: https://travis-ci.org/github/Reamer/zeppelin/builds/661884904

[zjffdu]

Thanks @Reamer for the contribution, do you need to upgrade shiro as well ?

[Reamer]

@zjffdu
An update of shiro is not required. Shiro version is 1.4.2, feature was added in 1.4.0.

[zjffdu]

Thanks， LGTM