ENH: added verbose option to data model

Very simple enhancement to allow for a silent vs. verbose option when synchronizing data models.

This is useful for integration tests.

.docker/Dockerfile

-FROM debian:10
+FROM debian:11
 RUN apt-get update && \
     apt-get install \
     curl \
@@ -13,7 +13,7 @@ RUN apt-get update && \
     tox \
     git \
     openjdk-11-jdk-headless \
-    python-autopep8 \
+    python3-autopep8 \
     python3-pytest \
     libxml2 \
     -y