Added quality test

Author: Alberto Juan

change_sorting_key_kafka_data_source/tests/default.yaml

@@ -0,0 +1,8 @@
+- recent-visits-exist:
+    max_bytes_read: null
+    max_time: null
+    sql: |
+        SELECT count() AS cnt
+        FROM product_events
+        WHERE datetime >= NOW() - INTERVAL '1 month'
+        HAVING cnt = 0