feat: crear temporalmente los dominios en njalla

el problema es que no podemos delegar `_dnslink.*.sutty.nl` hacia
distributed press, con lo que es necesario crear un subdominio por cada
sitio que lo active.

Gemfile

@@ -40,6 +40,7 @@ gem 'devise'
 gem 'devise-i18n'
 gem 'devise_invitable'
 gem 'distributed-press-api-client', '~> 0.2.2'
+gem 'njalla-api-client'
 gem 'email_address', git: 'https://github.com/fauno/email_address', branch: 'i18n'
 gem 'exception_notification'
 gem 'fast_blank'

Gemfile.lock

@@ -387,6 +387,9 @@ GEM
     nokogiri (1.12.5-x86_64-linux-musl)
       mini_portile2 (~> 2.6.1)
       racc (~> 1.4)
+    njalla-api-client (0.1.0)
+      dry-schema
+      httparty (~> 0.18)
     orm_adapter (0.5.0)
     pairing_heap (3.0.0)
     parallel (1.21.0)
@@ -654,6 +657,7 @@ DEPENDENCIES
   mini_magick
   mobility
   net-ssh
+  njalla-api-client
   nokogiri
   pg
   pg_search

app/models/deploy_distributed_press.rb

@@ -111,6 +111,12 @@ class DeployDistributedPress < Deploy
     self.remote_site_id = created_site[:id]
     self.remote_info = created_site.to_h
 
+    # XXX: Esto depende de nuestro DNS actual, cuando lo migremos hay
+    # que eliminarlo.
+    self.remote_info['njalla'] = {}
+    self.remote_info['njalla']['a'] = njalla.add_record(name: site.name, type: 'CNAME', content: "#{Site.domain}.").to_h
+    self.remote_info['njalla']['ns'] = njalla.add_record(name: "_dnslink.#{site.name}", type: 'NS', content: "#{publisher.hostname}.").to_h
+
     nil
   end
 
@@ -123,4 +129,16 @@ class DeployDistributedPress < Deploy
     build_stats.create action: publisher.to_s,log: log, seconds: time_spent_in_seconds, bytes: size, status: status
     nil
   end
+
+  # Actualizar registros en Njalla
+  #
+  # @return [Njalla::V1::Domain]
+  def njalla
+    @njalla ||=
+      begin
+        client = Njalla::V1::Client.new(token: ENV['NJALLA_TOKEN'])
+
+        Njalla::V1::Domain.new(domain: Site.domain, client: client)
+      end
+  end
 end

app/models/distributed_press_publisher.rb

@@ -40,6 +40,13 @@ class DistributedPressPublisher < ApplicationRecord
     "Distributed Press <#{instance}>"
   end
 
+  # Devuelve el hostname de la instancia
+  #
+  # @return [String]
+  def hostname
+    @hostname ||= URI.parse(instance).hostname
+  end
+
   # @return [Logger]
   def logger
     @logger ||=