Allow installation of "reload" hook to be controlled

[hansmi]

@vshn are using acmetool in a Puppet environment. To have a fully automatic configuration the responses to prompts are written preemptively to /var/lib/acme/conf/responses. We use that to, for example, disable the HAproxy hook (acmetool-quickstart-install-haproxy-script).

It'd be great to have another parameter (acmetool-quickstart-install-reload-script?) to also control the installation of the reload hook. Right now the Puppet code has to remove it after quickstart.