POWERDNS: Add option to set the PowerDNS zone kind (#2274)

Signed-off-by: Jan-Philipp Benecke <jan-philipp@bnck.me>

documentation/providers/powerdns.md

@@ -29,13 +29,19 @@ Following metadata are available:
         'a.example.com.',
         'b.example.com.'
     ],
-    'dnssec_on_create': false
+    'dnssec_on_create': false,
+    'zone_kind': 'Native',
 }
 ```
 {% endcode %}
 
 - `default_ns` sets the nameserver which are used
 - `dnssec_on_create` specifies if DNSSEC should be enabled when creating zones
+- `zone_kind` is the type that will be used when creating the zone.
+  <br>Can be one of `Native`, `Master` or `Slave`, when not specified it defaults to `Native`.
+  <br>Please see [PowerDNS documentation](https://doc.powerdns.com/authoritative/modes-of-operation.html) for explanation of the kinds.
+  <br>**Note that these tokens are case-sensitive!**
+
 
 ## Usage
 An example configuration:

providers/powerdns/dns.go

@@ -86,6 +86,7 @@ func (dsp *powerdnsProvider) EnsureZoneExists(domain string) error {
 		Type:        zones.ZoneTypeZone,
 		DNSSec:      dsp.DNSSecOnCreate,
 		Nameservers: dsp.DefaultNS,
+		Kind:        dsp.ZoneKind,
 	})
 	return err
 }

providers/powerdns/powerdnsProvider.go

@@ -3,6 +3,7 @@ package powerdns
 import (
 	"encoding/json"
 	"fmt"
+	"github.com/mittwald/go-powerdns/apis/zones"
 
 	"github.com/StackExchange/dnscontrol/v3/models"
 	"github.com/StackExchange/dnscontrol/v3/providers"
@@ -42,6 +43,7 @@ type powerdnsProvider struct {
 	ServerName     string
 	DefaultNS      []string       `json:"default_ns"`
 	DNSSecOnCreate bool           `json:"dnssec_on_create"`
+	ZoneKind       zones.ZoneKind `json:"zone_kind"`
 
 	nameservers []*models.Nameserver
 }