Fix Cloudflare proxy enable/disable functionality

- Remove zone_id and id fields from DNS record update payload as they are not expected by Cloudflare API
- Fix KeyError 'zone_id' when accessing DNS record properties that don't exist
- Cloudflare API expects only the data fields in PUT request body, not the identifiers

Fixes #1478

dns/dnsManager.py

@@ -1118,14 +1118,11 @@ class DNSManager:
                 new_r_proxied_flag = True
 
             for dns_record in dns_records:
-                r_zone_id = dns_record['zone_id']
-                r_id = dns_record['id']
                 r_name = dns_record['name']
                 r_type = dns_record['type']
                 r_content = dns_record['content']
                 r_ttl = dns_record['ttl']
                 r_proxied = dns_record['proxied']
-                r_proxiable = dns_record['proxiable']
 
                 if r_proxied == new_r_proxied_flag:
                     # Nothing to do
@@ -1134,8 +1131,6 @@ class DNSManager:
                 dns_record_id = dns_record['id']
 
                 new_dns_record = {
-                    'zone_id': r_zone_id,
-                    'id': r_id,
                     'type': r_type,
                     'name': r_name,
                     'content': r_content,