Change CI template from jobs to stages (#2980)

Author: weshaggard

sdk/servicebus/ci.yml

@@ -12,7 +12,7 @@ trigger:
       - sdk/servicebus/
 
 extends:
-  template: /eng/pipelines/templates/jobs/archetype-sdk-client.yml
+  template: /eng/pipelines/templates/stages/archetype-sdk-client.yml
   parameters:
     ServiceDirectory: servicebus
     Artifacts: