add example stages to advanced test

.azure-pipelines/advanced-test.yml

@@ -12,4 +12,16 @@ variables:
   snapBuildTimeout: 5400
 
 stages:
-  - template: templates/stages/test-and-package-stage.yml
+  - stage: Stage1
+    jobs:
+      - job: job1
+        steps:
+          - bash: exit 1
+            displayName: 'fail'
+  - stage: Stage2
+    jobs:
+      - job: job2
+        steps:
+          - bash: echo "success"
+            displayName: 'double success'
+  - template: templates/stages/notify-stage.yml