Modified CI/CD workflows to gracefully handle Proxmox node failures:
CI Workflow (ci.yml):
- Terraform Plan only runs on main branch (faster CI on feature branches)
- Plan failures on unavailable nodes don't block validation
- Added warning message when plan fails
Deploy Workflow (deploy.yml):
- Added continue-on-error to all deploy jobs (pve1, pve2, pve3)
- Modified cluster validation to require 2/3 nodes (quorum)
- Enhanced deployment summary with success counter
- Exit codes: 0 if >=2 nodes, 1 if 1 node, 1 if 0 nodes
This ensures the infrastructure remains operational even when one
Proxmox node is down, maintaining HA principles.
