fix accidentally removed cluster parameter
Merge branch 'parameterized_classes' into leap

Conflicts:
	manifests/init.pp
Previous to this commit, when a stunnel::service definition was removed, the
/etc/stunnel/${name}.conf was left, and the stunnel remained running. Also, if
you changed a parameter in a stunnel::service definition, the .conf file was
changed, but the service restart may not happen properly.

This commit adds functionality to properly clean up running stunnels that are no
longer managed, and restart managed ones whose parameters have changed
Merge remote-tracking branch 'leap/feature/refresh_stunnels'