Add support for wildcard SRV records, as shown in RFC 2782

octodns/record/__init__.py

@@ -1209,7 +1209,7 @@ class SrvValue(EqualityTupleMixin):
 class SrvRecord(_ValuesMixin, Record):
     _type = 'SRV'
     _value_type = SrvValue
-    _name_re = re.compile(r'^_[^\.]+\.[^\.]+')
+    _name_re = re.compile(r'^(\*|_[^\.]+)\.[^\.]+')
 
     @classmethod
     def validate(cls, name, fqdn, data):

tests/test_octodns_record.py

@@ -2155,6 +2155,18 @@ class TestRecordValidation(TestCase):
             }
         })
 
+        # permit wildcard entries
+        Record.new(self.zone, '*._tcp', {
+            'type': 'SRV',
+            'ttl': 600,
+            'value': {
+                'priority': 1,
+                'weight': 2,
+                'port': 3,
+                'target': 'food.bar.baz.'
+            }
+        })
+
         # invalid name
         with self.assertRaises(ValidationError) as ctx:
             Record.new(self.zone, 'neup', {