🏗️ Add DAARION Infrastructure Stack

- Terraform + Ansible + K3s + Vault + Consul + Observability
- Decentralized network architecture (own datacenters)
- Complete Ansible playbooks:
  - bootstrap.yml: OS setup, packages, SSH
  - hardening.yml: Security (UFW, fail2ban, auditd, Trivy)
  - k3s-install.yml: Lightweight Kubernetes cluster
- Production inventory with NODE1, NODE3
- Group variables for all nodes
- Security check cron script
- Multi-DC ready with Consul support

infrastructure/ansible/kubeconfig/.gitignore

@@ -0,0 +1,2 @@
+*.yaml
+!.gitkeep