[Improvement] Create/Update Environments with Existing Project

[nxchoople]

Describe the request
If using a project.py file which contains the project DSL code as well as the environment DSL code, make the environments get created or updated after the project has been created.

Current behaviour
If using a project.py file which contains the project DSL code as well as the environment DSL code, today any updates after the project has been created in Self-Service results in any environment updates specified in the project.py file not being applied to the environments in the project. Environments specified in the project.py file only get created the very first time you create the project. Afterwards, only the project DSL code in the file applies which updates the project, but not the environments.

Expected behaviour
Always create/update project and environments specified in the project.py file even if the project already exists in Self-Service.