PDK Updates, clean up module

Update PDK framework. Get rid of old params style of module writing and
replace with Hiera 5 module data.

.devcontainer/Dockerfile

@@ -0,0 +1,6 @@
+FROM puppet/pdk:latest
+
+# [Optional] Uncomment this section to install additional packages.
+# RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+#     && apt-get -y install --no-install-recommends <your-package-list-here>
+