modify systest for web ui. 

pls move this to a new function
do exact match ENV["ZULL_PROJECT"] == "contrail-web"
Initialize a variable @webui_config = "False"
and set this to "True" in the new function, if the project is contrail-web
Use this variable when generating test topology above

If u are familiar with this, I can do it as well, and u review it.

Thanks,
Ananth