Added /etc/modules to init.pp to make sure it gets installed.

Signed-off-by: The Doctor <drwho@virtadpt.net>
Added /etc/default/rng-tools to repository.  Added to init.pp to make
sure it gets installed.

Signed-off-by: The Doctor <drwho@virtadpt.net>
Added rng-tools package to list of packages to install.

Added rng-tools to the list of system services that have to be started
at boot-time.

Signed-off-by: The Doctor <drwho@virtadpt.net>