POWERDNS: Add option to set SOA-EDIT-API when creating zones via the API (#2458)

Co-authored-by: Tom Limoncelli <tlimoncelli@stackoverflow.com>

documentation/providers/powerdns.md

@@ -41,7 +41,10 @@ Following metadata are available:
   <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!**
-
+- `soa_edit_api` is the default SOA serial method that is used for zone created with the API
+  <br> Can be one of `DEFAULT`, `INCREASE`, `EPOCH`, `SOA-EDIT` or `SOA-EDIT-INCREASE`, default format is YYYYMMDD01.
+  <br>Please see [PowerDNS SOA-EDIT-DNSUPDATE documentation](https://doc.powerdns.com/authoritative/dnsupdate.html#soa-edit-dnsupdate-settings) for explanation of the kinds.
+  <br>**Note that these tokens are case-sensitive!**
 
 ## Usage
 An example configuration:

providers/powerdns/dns.go

@@ -87,6 +87,7 @@ func (dsp *powerdnsProvider) EnsureZoneExists(domain string) error {
 		DNSSec:      dsp.DNSSecOnCreate,
 		Nameservers: dsp.DefaultNS,
 		Kind:        dsp.ZoneKind,
+		SOAEditAPI:  dsp.SOAEditAPI,
 	})
 	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/v4/models"
@@ -44,6 +45,7 @@ type powerdnsProvider struct {
 	DefaultNS      []string       `json:"default_ns"`
 	DNSSecOnCreate bool           `json:"dnssec_on_create"`
 	ZoneKind       zones.ZoneKind `json:"zone_kind"`
+	SOAEditAPI     string         `json:"soa_edit_api,omitempty"`
 
 	nameservers []*models.Nameserver
 }