add jindo_runtime example

[yangyuliufeng]

Ⅰ. Describe what this PR does

添加了jindo_runtime示例：jindo_runtime示例的实现较为简单，会直接通过helm install完成master、worker的部署，并且把dataset从notbound改为bound。没有实现完整的生命周期，如volume的删除；也没有对dataset和jindoruntime的资源对象进行详细的修改。
对fluid进行了少量改动：需要修改csi-nodeplugin的挂载目录和挂载检查脚本；需要修改创建runtime的factory.go

Ⅱ. Does this pull request fix one issue?

Ⅲ. List the added test cases (unit test/integration test) if any, please explain if no tests are needed.

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[cheyang]

能否单独提交PR，将能够通用的方法下沉，谢谢！

[codecov-io]

Codecov Report

Merging #1 (33391d3) into master (36c185b) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master       #1   +/-   ##
=======================================
  Coverage   17.98%   17.98%           
=======================================
  Files          53       53           
  Lines        2269     2269           
=======================================
  Hits          408      408           
  Misses       1822     1822           
  Partials       39       39           

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