feat: add option allow_tranfer for zones

spec/bind.rb

@@ -24,6 +24,14 @@ end
   end
 end
 
+describe file('/etc/bind/named.conf.local') do
+  it { should be_file }
+  it { should be_mode 644 }
+  it { should be_owned_by 'root' }
+  it { should be_grouped_into 'root' }
+  it { should contain '4.2.2.4' }
+end
+
 describe command('host hello.test.local 127.0.0.1') do
   its(:exit_status) { should eq 0 }
   its(:stdout) { should contain('1.2.3.4') }

templates/named.conf.local.j2

@@ -8,6 +8,12 @@ zone "{{ zone }}" IN {
 {% else %}
 	file "/etc/bind/zones/db.{{ zone }}";
 {% endif %}
-	allow-transfer { 217.70.177.40; };
+{% if 'allow_transfer' in value and value.dnssec %}
+	allow-transfer {
+{% for ip in value.allow_transfer %}
+    {{ ip }};
+{% endfor %}
+  };
+{% endif %}
 };
 {% endfor %}

tests/bind.yml

@@ -4,6 +4,8 @@
     bind_role: master
     bind_zones:
       test.local:
+        allow_transfer:
+          - '4.2.2.4'
         ns_primary: ns1.test.local
         mail: root@test.local
         serial: 2017092202