Fix ansible-lint violations and modernize Netdata ansible quck-start playbook

[guiand888]

Summary

There are several issues with the playbook at it is:

• does not follow ansible syntax best practices (linting, FQCN, etc.)
• implements "playbook" elements into tasks
• use a script and installation methods that are deprecated

This PR fixes those issues.

Most importantly, it ensure the role remains functional as my-netdata.io/kickstart.sh is deprecated.

Key Changes

Ansible-lint Compliance

• Fixed 25+ ansible-lint violations across all files
• Passes production profile with 0 failures, 0 warnings
• Uses FQCN for all modules (ansible.builtin.*)
• Proper YAML formatting and ansible best practices

Modern Installation Approach

• Replaced deprecated netdata-claim.sh script with modern kickstart.sh approach
• Integrated installation and claiming
• Intelligent reclaim logic - only uninstall if Netdata exists
• Resolves repository conflicts during reclaim scenarios

Additional Installation Options

• netdata_channel: Choose 'stable' or 'nightly' installation
• netdata_auto_updates: Control automatic updates (default: false for automation)
• Maintains backward compatibility with existing configurations (reinstall or reclaim)

Improved Structure

• Created proper playbook.yml with playbook-level elements
• Remove playbook-level elements for task files
• Added handlers for service restarts
• Fixed template variable handling

Usage

ansible-playbook -i hosts playbook.yml

Configuration Examples

# Use nightly channel with auto-updates
netdata_channel: nightly
netdata_auto_updates: true

# Reclaim existing installation
reclaim: true

[CLAassistant]

All committers have signed the CLA.

[Copilot]

Pull Request Overview

This PR modernizes the Netdata Ansible quickstart playbook by fixing ansible-lint violations and replacing deprecated installation methods with the current kickstart script approach. The changes ensure compliance with Ansible best practices while maintaining backward compatibility.

Key Changes:

• Fixed 25+ ansible-lint violations using FQCN and proper YAML formatting
• Replaced deprecated netdata-claim.sh with modern kickstart.sh that handles both installation and claiming
• Added proper playbook structure separating playbook-level elements from task files

Reviewed Changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
vars/main.yml	Added new configuration options for installation channel and auto-updates
templates/netdata.conf.j2	Fixed template variable handling with proper Jinja2 syntax
tasks/main.yml	Converted import_playbook to import_tasks with proper FQCN
tasks/install.yml	Complete rewrite using modern kickstart script with integrated claiming
tasks/configure.yml	Streamlined configuration task with proper FQCN and path handling
tasks/claim.yml	Simplified to service verification since claiming moved to install
playbook.yml	New main playbook file with proper structure and handlers
README.md	Updated documentation with comprehensive usage instructions

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