Refactoring samples

Restructuring the samples repository
Add more docker support
Add acceptance tests for the apps
Adding sensor average processor sample
Remove aggregate samples

source-samples/jdbc-source/docker-compose-rabbit.yml

@@ -0,0 +1,18 @@
+version: '3'
+volumes:
+  data-volume: {}
+services:
+  mysql:
+    image: mariadb
+    ports:
+      - "3306:3306"
+    environment:
+      MYSQL_ROOT_PASSWORD: pwd
+      MYSQL_DATABASE: sample_mysql_db
+    volumes:
+      - data-volume:/var/lib/mysql
+  rabbitmq:
+    image: rabbitmq:management
+    ports:
+      - 5672:5672
+      - 15672:15672