Function add_secondary_zone 

pub async fn add_secondary_zone(
    client: &Arc<Client>,
    token: &Arc<String>,
    zone_name: &str,
    server: &str,
    key_data: &RndcKeyData,
    primary_ips: &[String],
) -> Result<bool>

Add a secondary zone via HTTP API.

Creates a secondary zone configured to transfer from the specified primary servers. This is idempotent - if the zone already exists, it returns success without re-adding.

Arguments

• client - HTTP client
• token - Authentication token
• zone_name - Name of the zone (e.g., “example.com”)
• server - API endpoint of the secondary server (e.g., “bind9-secondary-api:8080”)
• key_data - RNDC key data
• primary_ips - List of primary server IP addresses to transfer from

Returns

Returns Ok(true) if the zone was added, Ok(false) if it already existed.

Errors

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