Fix example bug in switch and datax task type.
Fix misunderstanding for condition node
* [python] Fix switch example workflow name conflict to dependent
* [python] Fix task condition missing branch success and fail
* [python] Task datax add more detail example
* [cherry-pick][python] Make it work to 2.0.2
* Remove unused ProcessExecutionTypeEnum
* Add queryByName to project
* Add checkTenantExists to tenant
* Add queryByTenantCode to tenant
* Add queryQueueName to queue
* Add all content from dev branch
* Add gitignore
* Add pydolphinscheduler content
* Add ds-py to bin test
* Py merge to 202
* Fix version
* Fix missing variable
* Add py4j as known deps
* Fix core database bug