fix: change swap_size to pointer type and update related logic

[zliang-akamai]

📝 Description

When swap_size is not configured, we should not include it in the request payload. Update it to be a pointer type to achieve it.

✔️ How to Test

make unit-test

[dawiddzhafarov]

Isn't that a breaking change?

[Copilot]

Pull request overview

Updates the Linode builder config so swap_size can be omitted from the Linode API request payload when not configured, aligning request behavior with optional configuration semantics.

Changes:

• Changed Config.SwapSize from int to *int to distinguish “unset” vs “set to 0”.
• Updated instance creation to pass SwapSize through as a pointer (allowing omission when nil).
• Added unit tests and updated generated docs to reflect the new optional/pointer behavior.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
builder/linode/step_create_linode.go	Passes swap size as a pointer so it can be omitted when unset.
builder/linode/config.go	Changes swap_size to *int and updates validation logic to handle nil safely.
builder/linode/builder_test.go	Adds tests for swap_size omitted vs explicitly set to 0.
.web-docs/components/builder/linode/README.md	Updates generated docs type display for swap_size.

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[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

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[Copilot]

The docs now show swap_size as (*int), which is a Go implementation detail and doesn’t reflect how users configure this field in Packer templates (they provide a number, not a pointer). Consider keeping the rendered type as int (and optionally adding a note that omitting swap_size will omit it from the API payload) so the documentation remains user-focused and consistent with the rest of the top-level config fields.

Suggested change

	- `swap_size` (\*int) - The disk size (MiB) allocated for swap space.
	- `swap_size` (int) - The disk size (MiB) allocated for swap space. If omitted, no swap size is sent in the API payload.