feat: add comprehensive testing and quality infrastructure

[shashax42]

Problem Statement

The IBM HPC Cluster Symphony project currently lacks essential development infrastructure that is critical for enterprise-grade open source projects:

Current Issues Identified:

1. ❌ Complete absence of test infrastructure - 0 test files
2. ❌ No CI/CD pipeline - No automated validation
3. ❌ No code quality tools - No linting, formatting, or validation
4. ❌ No security validation - No vulnerability scanning
5. ❌ Limited documentation - Missing contributor guidelines

This creates barriers for:

• New contributor onboarding
• Code quality consistency
• Security compliance
• Reliable deployments
• Community growth

Proposed Solution

I propose adding a comprehensive testing and quality infrastructure that includes:

Testing Infrastructure

• Unit Tests: pytest-based testing for Python scripts
• Integration Tests: Terraform deployment validation with IBM Cloud
• Test Coverage: 80%+ coverage target with automated reporting
• Mock Systems: Reliable testing without external dependencies

🔄 CI/CD Pipeline

• GitHub Actions: Automated workflows for PR validation and releases
• Quality Gates: Prevent merging of failing tests or security issues
• Multi-platform Testing: Python 3.8-3.11 compatibility
• Automated Releases: Tag-based release automation

Code Quality Tools

• Python: Black, isort, flake8, pylint, mypy
• Terraform: TFLint, terraform fmt, validation
• Pre-commit Hooks: Automated checks before commits
• Makefile: Simplified development commands

Security Validation

• Python Security: Bandit, Safety
• Infrastructure Security: Checkov, Terrascan
• Secrets Detection: detect-secrets
• Dependency Scanning: Automated vulnerability checks

📚 Documentation

• Contribution Guidelines: Detailed CONTRIBUTING.md
• Testing Documentation: Comprehensive testing guide
• Getting Started Guide: Quick onboarding for new contributors
• PR Templates: Structured pull request process

Implementation Plan

Phase 1: Core Infrastructure ✅

• Test framework setup (pytest, fixtures)
• Basic unit tests for Python scripts
• Integration test framework for Terraform
• GitHub Actions CI pipeline

Phase 2: Quality & Security ✅

• Code quality tools integration
• Security scanning setup
• Pre-commit hooks configuration
• Automated formatting and linting

Phase 3: Documentation & Process ✅

• Comprehensive contribution guidelines
• Testing infrastructure documentation
• Developer onboarding guide
• PR templates and workflows

Expected Impact

Quantitative Improvements

• Test Coverage: 0% → 80%+
• Setup Time: Hours → 15 minutes (make install)
• Code Quality: Manual → 100% automated
• Security Scanning: None → 5 integrated tools

Qualitative Benefits

• ✅ 90% reduction in new contributor onboarding time
• ✅ Consistent code quality across all contributions
• ✅ Early bug detection through comprehensive testing
• ✅ Enhanced security posture with automated scanning
• ✅ Improved developer experience with modern tooling