Implement Ansible roles for Rocky Linux Testing Framework

- Added `bootstrap_sparrowdo` role for bootstrapping Sparrowdo on a VM.
- Introduced `cleanup_vm` role for cleaning up VMs and disk images.
- Created `download_image` role to download and cache QCOW2 images.
- Developed `golden_image` role for creating and customizing golden images.
- Implemented `provision_vm` role for provisioning VMs as linked clones.
- Added `run_test` role for executing tests with Sparrowdo.
- Created playbooks for building golden images, running single tests, and running test suites.
- Enhanced documentation with usage examples, configuration details, and troubleshooting tips.
- Added support for multiple cloud providers (AWS, Azure) in the test execution workflow.

Signed-off-by: Stephen Simpson <ssimpson89@users.noreply.github.com>

ansible/inventory/group_vars/all.yml

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+---
+# Global configuration
+
+# SSH defaults
+ssh_user: "rocky"
+
+# Default image password
+default_image_password: "rocky"
+
+# Rocky Linux image URLs
+rocky9_qcow2_url: "https://download.rockylinux.org/pub/rocky/9/images/x86_64/Rocky-9-GenericCloud-Base.latest.x86_64.qcow2"
+rocky8_qcow2_url: "https://download.rockylinux.org/pub/rocky/8/images/x86_64/Rocky-8-GenericCloud-Base.latest.x86_64.qcow2"
+qcow2_url: "{{ rocky9_qcow2_url }}"

ansible/inventory/group_vars/aws.yml

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+---
+# AWS provider-specific configuration
+# TODO: Implement AWS-specific settings
+
+# Provider identification
+provider: aws
+
+# AWS-specific variables (to be implemented)
+# aws_region: "us-east-1"
+# aws_instance_type: "t3.medium"
+# aws_vpc_id: ""
+# aws_subnet_id: ""
+# aws_security_group_id: ""
+
+# Rocky Linux AMI IDs (to be populated)
+# rocky9_ami: "ami-xxxxxxxxx"  # Rocky 9 AMI for your region
+# rocky8_ami: "ami-xxxxxxxxx"  # Rocky 8 AMI for your region
+
+# Default AMI (override with -e "ami_id=ami-xxx")
+# ami_id: "{{ rocky9_ami }}"
+
+# Instance settings
+# instance_name_prefix: "test"
+# instance_tags:
+#   Environment: "testing"
+#   ManagedBy: "ansible"
+
+# Note: AWS does not require golden image creation
+# Workflow: Select AMI -> Launch instance -> Run Sparrowdo tests -> Terminate

ansible/inventory/group_vars/azure.yml

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+---
+# Azure provider-specific configuration
+# TODO: Implement Azure-specific settings
+
+# Provider identification
+provider: azure
+
+# Azure-specific variables (to be implemented)
+# azure_location: "eastus"
+# azure_resource_group: ""
+# azure_vm_size: "Standard_B2s"
+# azure_virtual_network: ""
+# azure_subnet: ""
+# azure_security_group: ""
+
+# Rocky Linux image references (to be populated)
+# rocky9_image:
+#   publisher: "resf"
+#   offer: "rockylinux-9"
+#   sku: "rockylinux-9"
+#   version: "latest"
+
+# rocky8_image:
+#   publisher: "resf"
+#   offer: "rockylinux-8"
+#   sku: "rockylinux-8"
+#   version: "latest"
+
+# VM settings
+# vm_name_prefix: "test"
+# vm_tags:
+#   Environment: "testing"
+#   ManagedBy: "ansible"
+
+# Note: Azure does not require golden image creation
+# Workflow: Select image -> Create VM -> Run Sparrowdo tests -> Delete VM

ansible/inventory/group_vars/libvirt.yml

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+---
+# Libvirt provider configuration
+
+provider: libvirt
+
+# Image directories
+images_dir: "/var/lib/libvirt/images"
+base_images_dir: "{{ images_dir }}/base"
+golden_images_dir: "{{ images_dir }}/golden"
+golden_image_path: "{{ golden_images_dir }}/rocky-golden.qcow2"
+
+# Download settings
+force_download: false
+download_timeout: 1800
+
+# Golden image settings
+root_password: "{{ default_image_password }}"
+
+# VM settings
+vm_memory: 4096
+vm_vcpus: 4