firewall.toports expects an undef value or a match for Pattern[/^\d+(?:-\d+)?$/], got Integer

[chrisongthb]

Describe the Bug

With param toports (--to-ports) one might want to redirect to a single port. Not only to a range of ports. We currently get this error:
Failed to apply catalog: Parameter toports failed on Firewall[233 redirect traffic on port 5432 to 5433]: firewall.toports expects an undef value or a match for Pattern[/^\d+(?:-\d+)?$/], got Integer

Expected Behavior

The module should accept the single port as Integer.

Steps to Reproduce

@firewall { "233 redirect traffic on port 5432 to 5433":
  chain    => 'PREROUTING',
  jump     => 'REDIRECT',
  iniface  => 'bond0',
  toports  => 5433,
  table    => 'nat',
  dport    => 5432,
  protocol => 'iptables',
  tag      => 'virtual',
}

Environment

• Module version v7.0.2
• Puppet Agent version 7.26.0
• Puppet Server version 7.13.0
• Platform Ubuntu 20.04, 22.04