Fix the problem of transformer component in Streamis

[Davidhua1996]

What is the purpose of the change

Fix the problem of transformer component, which cause the failure in deploying dependent jar to yarn.
Related issues: #56.

Brief change log

• Adjust the parameter defined in transformer

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): no
• Anything that affects deployment: no
• The Core framework, i.e., JobManager, Server.: no

Documentation

• Does this pull request introduce a new feature? no
• If yes, how is the feature documented? not documented

[jefftlin]

LGTM!