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/roles/golden_image/defaults/main.yml

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+---
+# Paths (passed from playbook)
+golden_image_base_image_path: ""
+golden_image_path: ""

ansible/roles/golden_image/tasks/customize.sh

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+#!/bin/bash
+set -eux
+
+# Create user if it doesn't exist
+if ! id -u rocky >/dev/null 2>&1; then
+    useradd -m rocky
+fi
+
+# Set password
+echo "rocky:rockypass" | chpasswd
+
+# Sudoers
+echo "rocky ALL=(ALL) NOPASSWD:ALL" > /etc/sudoers.d/rocky
+chmod 0440 /etc/sudoers.d/rocky
+
+# Enable ssh
+systemctl enable sshd

ansible/roles/golden_image/tasks/main.yml

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+---
+- name: Verify base image exists
+  ansible.builtin.stat:
+    path: "{{ golden_image_base_image_path }}"
+  register: golden_image_base_image_stat
+  failed_when: not golden_image_base_image_stat.stat.exists
+
+- name: Ensure golden image directory exists
+  ansible.builtin.file:
+    path: "{{ golden_image_path | dirname }}"
+    state: directory
+    mode: '0755'
+  become: true
+
+- name: Copy base image to golden image
+  ansible.builtin.copy:
+    src: "{{ golden_image_base_image_path }}"
+    dest: "{{ golden_image_path }}"
+    remote_src: true
+    mode: '0644'
+  become: true
+
+- name: Customize golden image
+  ansible.builtin.command: >
+    virt-customize -a {{ golden_image_path }}
+    --install perl,git,wget,tar,openssh-server,vim
+    --run {{ role_path }}/tasks/customize.sh
+    --ssh-inject root:file:{{ ssh_public_key_path }}
+    --ssh-inject rocky:file:{{ ssh_public_key_path }}
+    --root-password password:{{ root_password }}
+    --selinux-relabel
+  changed_when: false
+  environment:
+    LIBGUESTFS_BACKEND: direct
+  become: true