Add support for Linode Interfaces

[zliang-akamai]

Merge from project branch to dev. This is basically same as #337, which has been reviewed and approved

Testing

go test ./builder/linode -run TestBuilderPrepare_LinodeNetworkInterfaces

Put this content in a file called test.pkr.hcl

locals { timestamp = regex_replace(timestamp(), "[- TZ:]", "") }

source "linode" "example" {
  image             = "linode/ubuntu24.04"
  image_description = "My Private Image"
  image_label       = "private-image-${local.timestamp}"
  instance_label    = "temporary-linode-${local.timestamp}"
  instance_type     = "g6-standard-1"
  region            = "us-mia"
  ssh_username      = "root"
  interface_generation = "linode"

  linode_interface {
    firewall_id = 2930969 // this firewall must allow SSH from your IP otherwise Packer won't be able to connect to it
    public {
    }
  }
}

build {
  sources = ["source.linode.example"]
}

Than run:

make dev
packer build .

[Copilot]

Pull Request Overview

This PR adds support for newer Linode network interfaces alongside the existing legacy config interfaces. The implementation introduces a new linode_interface configuration block with comprehensive support for public, VPC, and VLAN interface types, while maintaining backward compatibility with the existing interface configuration.

Key Changes:

• Added new LinodeInterface struct and related types for public, VPC, and VLAN interface configurations
• Implemented interface generation selection via interface_generation field
• Added flattening functions to convert Packer configuration to Linode API options

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
builder/linode/linode_interfaces.go	Defines new interface configuration structures for Linode networking
builder/linode/linode_interfaces.hcl2spec.go	Auto-generated HCL2 specification for new interface types
builder/linode/step_create_linode.go	Implements flattening logic and updates instance creation to support both interface types
builder/linode/config.go	Adds LinodeInterfaces and InterfaceGeneration configuration fields
builder/linode/config.hcl2spec.go	Updates HCL2 spec to include new configuration fields
builder/linode/builder_test.go	Adds comprehensive tests for Linode interface configuration
docs/builders/linode.mdx	Documents new interface configuration options with examples
.web-docs/components/builder/linode/README.md	Updates generated documentation for new interface support

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[ezilber-akamai]

LGTM!

[yec-akamai]

Nice work! 🎉