Remove controller environment variables from S2I templates

In S2I templates there is a option to connect Kie Server S2I build to the controller (Decision central). If we connect S2I Kie Server to the controller, then is all configuration lost because controller reset configuration for the new Server template (default behavior of the Controller) so all information about build container by S2I are lost.
There is workaround for this - we create Server template and Kie Container spec before the S2I build is triggered.
These variables in S2I templates can be very confusing for user and kind of useless. Also this behavior of the controller could be reported by users as a bug.

Now in the Decision central we can only deploy/undeploy Kie Containers and for this purpose should be used full template or only kie server template.

Actual:
Env. variables for connection to the controller in S2I templates
Expected:
No env. variables for connection to the controller in S2I templates