Some arrays were set to False by default.
This patch makes the values with the following rules:
- default is $::os_service_default so Puppet won't try to configure it.
- if set to something, we'll validate it's an array that is not empty
and configure the parameter.
- Otherwise, fallback to default.
That way, our users can let the default value or set an empty array, it
won't try to configure it; or set the parameters to an array and Puppet
will configure it properly.
Change-Id: Ib6c441f89f9cee81991fccdf1d3b4f6eb77e4d55
61bf070188