fix(vyos): use native load command for Ansible deployments

[jmgilman]

Summary

• Rewrites deploy.yml to use VyOS native load command instead of broken vyos_config module
• Adds .gitignore for rendered configs and backup artifacts
• Adds eth2 interface definition to gateway.conf

Problem

The vyos.vyos.vyos_config Ansible module claims to support bracket format configuration files but has critical bugs:

1. Doesn't parse /* */ comments - Treats them as commands, resulting in errors like:

   set * Target: VP6630 (Minisforum)
   Configuration path: [*] is not valid
   

2. Incorrectly converts bracket format to set commands - For example, firewall { interface eth0 {...}} becomes invalid set firewall interface eth0...

Solution

Use VyOS's native load command which properly handles bracket format with comments - the same approach used for manual USB provisioning:

1. SCP rendered config to router (/tmp/gateway.conf)
2. Run configure → load → commit → save → exit
3. Clean up temp files

This mirrors the working manual process:

sudo mount /dev/sda1 /mnt/usb
configure
load /mnt/usb/gateway.conf
commit

Test plan

• Verified playbook applies configuration changes correctly
• Tested with interface description change (apply → verify → revert → verify)
• Confirmed cleanup of temporary files on both local and remote

🤖 Generated with Claude Code