feat: enable ip forwarding for gitea runners (#253)

- required to enable docker containers reach git service

Reviewed-on: https://git.query.consul/unkinben/puppet-prod/pulls/253

hieradata/roles/infra/git/runner.yaml

@@ -45,3 +45,10 @@ profiles::gitea::runner::config:
     force_rebuild: false
   host:
     workdir_parent: "%{hiera('profiles::gitea::runner::home')}/.cache/act"
+
+# enable ip forwarding for docker containers
+sysctl::base::values:
+  net.ipv4.conf.all.forwarding:
+    value: '1'
+  net.ipv6.conf.all.forwarding:
+    value: '1'