…Spark Interpreter Scala REPL and fix the CI failure due to low Scala version

### What is this PR for?
- fix the [CI failure](https://travis-ci.org/github/apache/zeppelin/builds/709913046) due to [PR-3852](apache#3852)

### What type of PR is it?
[Bug Fix]

### Todos
* [ ] - Task

### What is the Jira issue?
* [ZEPPELIN-4962](https://issues.apache.org/jira/projects/ZEPPELIN/issues/ZEPPELIN-4962)

### How should this be tested?
* CI test

### Screenshots (if appropriate)

### Questions:
* Does the licenses files need update? NO
* Is there breaking changes for older versions? NO
* Does this needs documentation? Yes

Author: xiejiajun <[email protected]>
Author: xie-jia-jun <[email protected]>
Author: JakeXie <[email protected]>

Closes apache#3860 from xiejiajun/ZEPPELIN-4962 and squashes the following commits:

9128c9b [JakeXie] spark.repl.target docs update
ad4c0e3 [xiejiajun] Clear irrelevant code
a12d3a9 [xiejiajun] Support for manually specifying the Java version of Spark Interpreter Scala REPL and fix the CI failure due to low Scala version
ab2b191 [xiejiajun] Merge branch 'master' of https://github.com/apache/zeppelin into apache-master
5569788 [xiejiajun] Merge branch 'master' of https://github.com/apache/zeppelin into apache-master
0a9af6c [xiejiajun] Merge branch 'master' of https://github.com/apache/zeppelin into apache-master
be36b37 [xiejiajun] 合并Apache Master分支冲突解决
1335d55 [xiejiajun] Merge remote-tracking branch 'origin/master'
fc59f57 [JakeXie] Merge pull request #4 from apache/master
9cc70fe [xiejiajun] Merge remote-tracking branch 'origin/master'
6ef9b23 [xie-jia-jun] Merge pull request #3 from apache/master
45af87a [xiejiajun] added timeout for getting Thrift client to avoid situations where the interpreter may not be restarted when the interpreter process exits unexpectedly
f149c3b [xie-jia-jun] Merge pull request #1 from apache/master
5d4b645 [xie-jia-jun] Support OSSConfigStorage of Aliyun
dbb6639 [xie-jia-jun] Add Aliyun OSS SDK
bb47849 [xie-jia-jun] Support S3ConfigStorage of AWS

### What is this PR for?
This Good Practice Guide promotes the usage of `ng-bind` instead of the classic `{{}}` syntax, to have a performance boost.

### What type of PR is it?
Documentation

### What is the Jira issue?
https://issues.apache.org/jira/browse/ZEPPELIN-1495

### How should this be tested?
Outline the steps to test the PR here.

### 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: Damien CORNEAU <[email protected]>

Closes apache#1463 from corneadoug/ZEPPELIN-1495 and squashes the following commits:

102b62b [Damien CORNEAU] Add small update to Guide #1
23e64dc [Damien CORNEAU] Fix escaping of angular {{}}
c420d8a [Damien CORNEAU] Add Good Practice #4