Polish travis.yml to run integration tests

[RongtongJin]

The issue tracker is ONLY used for bug report(feature request need to follow RIP process). Keep in mind, please check whether there is an existing same report before your raise a new one.

Alternately (especially if your communication is not a bug report), you can send mail to our mailing lists. We welcome any friendly suggestions, bug fixes, collaboration and other improvements.

Please ensure that your bug report is clear and that it is complete. Otherwise, we may be unable to understand it or to reproduce it, either of which would prevent us from fixing the bug. We strongly recommend the report(bug report or feature request) could include some hints as the following:

FEATURE REQUEST

1. Please describe the feature you are requesting.

Polish travis.yml to run integration tests

2. Provide any additional detail on your proposed use case for this feature.

3. Indicate the importance of this issue to you (blocker, must-have, should-have, nice-to-have). Are you currently using any workarounds to address this issue?

4. If there are some sub-tasks using -[] for each subtask and create a corresponding issue to map to the sub task:

• sub-task1-issue-number: sub-task1 description here,
• sub-task2-issue-number: sub-task2 description here,
• ...

[vongosling]

@RongtongJin Try to start a new journey with GitHub workflow, Travis traffic is very heavy now.

[vongosling]

Looking forward to seeing our chaos module in the new CI/CD architecture:-)