Changes:
- Added default values to datacenter, cluster_name, and environment variables
- Default values match production environment (WBYC-DC01, wbyc-cluster01, prd)
- Updated variable descriptions to note CI/CD secret usage
- terraform.tfvars has been cleaned locally (already in .gitignore)
Benefits:
- No terraform.tfvars file needed for standard deployment
- CI/CD secrets can override defaults when needed
- Cleaner repository without sensitive data
- Variables have sensible defaults for this environment
- Add vSphere resource pool management
- Configure CPU and memory allocation controls
- Implement tagging system for organization
- Add comprehensive documentation
