cleanup static-shim-deploy template

This MR removes the printf calls and splits the script into a before_script and script.

The were a nice idea but they really don't look that good in the output. They also hide the output while it's being added which is annoying. Finally, it makes this YAML file almost unreadable, so just ditch the fancy stuff and stick with something more conventional.

And by moving the apt and SSH setup into a before_script, we make it more obvious where the actual business logic is. In this case, it is now much more obvious that we do an rsync and a ssh static-update-component (more or less) while before it was not obvious at all.