puppet nftables

Add variant array

rubocop:auto_correct results

Fix IPv4 source address type detection

Before this patch, a rule like this:

```
nftables::simplerule { 'foo':
action => 'accept',
dport => 443,
proto => 'tcp4',
saddr => '192.168.1.10',
}
```

would incorrectly generate this rule:...

Fix IP version filter for IPv6 traffic

Allow some other types of verdicts

Handle dport internally always as an array

Implement nftables:;simplerule::daddr

Allow IPv4 and IPv6 only rules

Add nftables::simplerule