L2SS-263: Fix broken image build

Merge d0b217f5 broken the images
build when the new compose file for the stat device was added.  The
file was missing the args: SOURCE_IMAGE: paragraph.

docker-compose/device-statistics.yml

@@ -19,7 +19,9 @@ services:
     # being shared among services.
     build:
         context: lofar-device-base
-    container_name: ${CONTAINER_NAME_PREFIX}device-statistics
+        args:
+            SOURCE_IMAGE: ${DOCKER_REGISTRY_HOST}/${DOCKER_REGISTRY_USER}/tango-itango:9.3.3.7
+    container_name: ${CONTAINER_NAME_PREFIX}device-sdp
     network_mode: ${NETWORK_MODE}
     volumes:
         - ${TANGO_LOFAR_CONTAINER_MOUNT}