Add IBM Cloud infrastructure support

[sayalibhavsar]

Description

This PR adds automated IBM Cloud VSI provisioning with Terraform, including VPC networking, security, floating IPs, and new Ansible roles with burden script integration.

Key capabilities added:

• Automated IBM Cloud infrastructure provisioning via Terraform
• Support for running multiple instance types in parallel without naming conflicts
• VPC creation with optional reuse of existing VPCs
• Automated SSH key detection and validation
• Resource cleanup utility for systematic deletion of IBM Cloud resources
• Error handling for failed provisioning and terraform state issues

Before/After Comparison

IBM Cloud Not Supported, No Parallel Multi-Instance Support, Manual Resource Management:

Documentation Check

Clerical Stuff

This closes #310

Relates to JIRA: RPOPC-677

[sayalibhavsar]

New Ansible Roles

• ibm_create - Basic IBM Cloud VSI provisioning with VPC networking
• ibm_vpc_create - Advanced IBM VPC provisioning with disk and network management

Infrastructure as Code

• Terraform configurations for IBM Cloud provider (~1.70)
• VPC creation with optional reuse of existing VPCs
• Subnet management (public and private)
• Security group rules (all inbound/outbound for testing)
• Floating IP allocation for public access
• SSH key integration with IBM Cloud
• Multi-network interface support
• Data volume creation and attachment
• Pbench benchmark volume support

Core Script Updates (bin/burden)

• Added ibm to valid system types
• ibm_image_lookup() - Query available OS images from IBM Cloud
• ibm_specific_os_version() - Handle IBM Cloud image IDs
• IBM Cloud region/zone defaults (us-south with zones 1-3)
• Default test user set to root for IBM instances
• Bug fix: user_parent_home_dir logic moved after user determination (handles /root vs /home/root)

Automation Playbook Updates (bin/ten_of_us.yml)

• IBM instance creation workflow integration
• CodeReady Builder repository enablement for IBM RHEL instances
• IBM Cloud cleanup/teardown in terraform delete logic

Authentication & Validation

• API key requirement validation (IC_API_KEY or IBMCLOUD_API_KEY)
• SSH key auto-detection (prioritizes "zathras" keys, then username keys)
• Resource group ID retrieval from IBM Cloud CLI
• Error messages with setup instructions

Configuration Templates

• Package dependencies added to all 11 test templates:
  • coremark, coremark_pro
  • fio, iozone
  • passmark, phoronix
  • pig, pyperformance
  • speccpu2017, specjbb
  • uperf
• RHEL, Ubuntu, and Amazon Linux package lists

Documentation

• Comprehensive 304-line README for IBM Cloud integration
• Prerequisites and setup instructions
• Usage examples with different configurations
• Troubleshooting guide
• IBM Cloud-specific limitations documented

Key Capabilities

• Automated infrastructure provisioning via Terraform
• Parallel multi-instance support without naming conflicts
• Multiple network interfaces for network performance tests
• Storage volume attachment for disk I/O benchmarks
• Region/zone selection and defaults
• Resource cleanup utilities
• Error handling for failed provisioning
• Metadata recording for test results

Files Added (38 new files)

• 1 README
• 18 Terraform configuration files (.tf)
• 13 Ansible task files (.yml)
• 3 Jinja2 templates (.j2)
• 1 vars file
• 2 modified core scripts

Files Modified (14 existing files)

• bin/burden (main CLI script)
• bin/ten_of_us.yml (main playbook)
• 11 test configuration templates
• 1 duplicate exec_dir line in specjbb_template.yml (line 2284)
  The implementation follows the same patterns as existing AWS/Azure/GCP providers, ensuring consistency across the codebase.