[alexgex]

This pull request refactors the deployment and initialization process for Fair manager contracts in the skale-nodes/ansible setup. The main changes include modularizing Ansible tasks, introducing a new Python script for whitelisting and staking nodes, and improving configuration and initialization logic for Fair nodes.

Ansible Task Modularization and New Features

• Split the main deployment tasks in roles/deploy_fair/tasks/main.yaml into two separate files: deploy_fair.yaml for contract deployment and whitelist_and_stake.yaml for node whitelisting and staking. This makes the playbook more maintainable and easier to extend.
• Added a new task in whitelist_and_stake.yaml to execute the whitelist_and_stake.py script, automating node whitelisting and staking after contract deployment.

Python Script for Whitelisting and Staking

• Introduced files/whitelist_and_stake.py, a Python script that programmatically whitelists and stakes all active nodes using environment variables for configuration. The script handles errors and logs progress for each node.

Configuration Improvements

• Added a new ansible.cfg file with defaults to disable host key checking and enable YAML output, improving Ansible usability and output readability.

Fair Node Initialization Enhancements

• Updated roles/init/tasks/main.yaml to add a conditional step for appending a --snapshot flag to the sync command for Fair nodes when a snapshot is defined, improving node initialization flexibility.
• Minor style change: switched double to single quotes for the Fair node type check for consistency.