Format template to have spaces and linefeeds in the right places.

```puppet
class { 'smartd': 
  devices     => [ '/dev/sg1', '/dev/sg2', ],
  device_opts => {
    '/dev/sg1' => '-o on -S on -a',
    '/dev/sg2' => '-o on -S on -a',
  },
}
```

Before fix:
```
# Managed by Puppet -- do not edit!
DEFAULT -m root -M daily
/dev/sg1-o on -S on -a/dev/sg2-o on -S on -aDEVICESCAN
```
After fix:
```
# Managed by Puppet -- do not edit!
DEFAULT -m root -M daily
/dev/sg1 -o on -S on -a
/dev/sg2 -o on -S on -a
DEVICESCAN
```