* Integrate Terraform into KubeVela
Integrated Terrafrom into KubeVela to enable it to deploy
infrastruce resouces by `vela up`
* extend Terraform modules/files as WorkloadDefinition
stop printing terraform log to console
Support one workload consumes two cloud services
Refactor Terraform plugin based on Application Object
add testcase
* refactor code per reviewer's comments
fix rebase issue
* find lost code back
* refactor code to make the modification as little as to that of branch master
* remove blank lines from imports
* OpenAPI: Application creation based on Application object
Implemented Application creation OpenAPI based on new Application object
To #913
* fix e2e problems
* fix import issue
* Generate restful api based on Swagger
As OpenAPI has to be quickly developped to support front-end developement, so
did the restufl api docs. Based on swagger, generate the docs automatically
* fix conflicts and add application list annotation
roy wang
Zheng Xi Zhou
天元
Jiaming Hu