Fix "creation" of empty built-in firewall chains #1206
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Summary
Fixes the issue when you are trying to create an in-built firewall chain in a table that was not been interacted with before.
Additional Context
Currently if you are trying to create in-built chain in an empty table (nat, for example) puppet will apply manifest without actually doing anything every time you run it. This is because firewall module relyes on
iptables-saveoutput that will not contain in-built chain if corresponding table not been interacted with yet.Checklist
puppet apply)