Function update_primary_zone 

pub async fn update_primary_zone(
    client: &Arc<Client>,
    token: Option<&str>,
    zone_name: &str,
    server: &str,
    secondary_ips: &[String],
) -> Result<bool>

Update an existing primary zone’s configuration via HTTP API.

Updates a zone’s also-notify and allow-transfer configuration without deleting and re-adding the zone. This is used when secondary pod IPs change (e.g., after pod restart) to keep zone transfer ACLs up to date.

Implementation: Uses bindcar’s PATCH endpoint introduced in v0.4.0.

Arguments

• client - HTTP client
• token - Authentication token
• zone_name - Name of the zone (e.g., “example.com”)
• server - API endpoint (e.g., “bind9-primary-api:8080”)
• secondary_ips - Updated list of secondary server IPs for also-notify and allow-transfer

Returns

Returns Ok(true) if the zone was updated, Ok(false) if no update was needed.

Errors

Returns an error if the HTTP request fails or the zone cannot be updated.