Fix missing metadata routes for Vultr

[eb3095]

Proposed Commit Message

Fix missing metadata routes for Vultr

Vultr uses 169.254.169.254 for the metadata server. Some distros are having trouble with this on IPv6 only servers because the route is not being assigned to the link-local interface by default as it is in other distros. This change sets that route before attempting to fetch the metadata avoiding the current issue.

Test Steps

Deploy Arch as IPv6 Only on Vultr.

Checklist:

• [ X ] My code follows the process laid out in the documentation
• [ X ] I have updated or added any unit tests accordingly
• [ X ] I have updated or added any documentation accordingly

[TheRealFalcon]

Thanks!