format-code: enable black/isort

  * black is a widely used python formatting tool.
  * isort is used to order python imports in a consistent way.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I1918421120ce2942f04b9110a2c0f1bd820d21c7
diff --git a/scripts/build-unit-test-docker b/scripts/build-unit-test-docker
index 2aa4c50..c7bb94a 100755
--- a/scripts/build-unit-test-docker
+++ b/scripts/build-unit-test-docker
@@ -846,10 +846,12 @@
 
 dockerfile_base += """
 RUN pip3 install beautysh
+RUN pip3 install black
 RUN pip3 install codespell
 RUN pip3 install flake8
 RUN pip3 install gitlint
 RUN pip3 install inflection
+RUN pip3 install isort
 RUN pip3 install jsonschema
 RUN pip3 install meson==0.63.0
 RUN pip3 install protobuf