Explicitly install pytest-network in test-module in case underlying module doesn't include it

script/test-module

@@ -26,7 +26,7 @@ git clone "https://github.com/${module}.git"
 cd $(basename $module)
 echo "## install module test requirements #############################################"
 if [ -e setup.py ]; then
-  pip install -e .[test]
+  pip install -e .[test] pytest-network
 elif [ -f pyproject.toml ]; then
   # install poetry
   pip install poetry