Enable offlineMode for gitea;Cleanup comments;Populate /etc/hosts

ansible/vars/metacluster.yml

@@ -51,6 +51,8 @@ components:
       chart: gitea-charts/gitea
       parse_logic: helm template . | yq --no-doc eval '.. | .image? | select(.)' | sort -u | sed '/:/!s/$/:latest/'
       chart_values: !unsafe |
+        config:
+          offlineMode: true
         gitea:
           admin:
             username: administrator