Include example definition in test app

From changes in this commit: eadaf34ef6

we need to include the new output in the test-app swagger.json file

test-app/swagger/v1/swagger.json

@@ -221,6 +221,12 @@
             },
             "content": {
               "application/json": {
+                "example": {
+                  "id": 1,
+                  "title": "Hello world!",
+                  "content": "Hello world and hello universe. Thank you all very much!!!",
+                  "thumbnail": "thumbnail.png"
+                },
                 "schema": {
                   "$ref": "#/definitions/blog"
                 }