SUBMARINE-533. Add pysubmarine ci dockerfile

[pingsutw]

What is this PR for?

Add pysubmarine ci docker image
The reason to add this dockerfile

1. The main reason is to generate python API from swagger without install any dependencies (java, python, code-jen.jar..etc)
2. Run pysubmarine testing and formatting Code inside docker
3. We could also build submarine inside docker
4. pysubmarine development

What type of PR is it?

[Improvement]

Todos

• - Task

What is the Jira issue?

https://issues.apache.org/jira/browse/SUBMARINE-533

How should this be tested?

https://travis-ci.org/github/pingsutw/hadoop-submarine/builds/706069697

Screenshots (if appropriate)

Questions:

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

[xunliu]

@pingsutw The content of this PR is too short, please add an explanation in the content of PR.
When do I need to use ./run-pysubmarine-ci.sh? Thanks!
Other places, LGTM

[pingsutw]

@liuxunorg Thanks for the review.
Sorry for the confusion.
I've updated the content in pr and Jira

[xunliu]

@pingsutw Thank you contribution this feature. :-)
Will merge if no more comnents.