Update EasyDNS tests and fixtures for NULL SRV records

Thanks to @actazen for assisting with API tests to confirm support

tests/fixtures/easydns-records.json

@@ -264,10 +264,32 @@
       "rdata": "v=DKIM1;k=rsa;s=email;h=sha256;p=A\/kinda+of\/long\/string+with+numb3rs",
       "geozone_id": "0",
       "last_mod": "2020-01-01 01:01:01"
+    },
+    {
+      "id": "12340025",
+      "domain": "unit.tests",
+      "host": "_imap._tcp",
+      "ttl": "600",
+      "prio": "0",
+      "type": "SRV",
+      "rdata": "0 0 0 .",
+      "geozone_id": "0",
+      "last_mod": "2020-01-01 01:01:01"
+    },
+    {
+      "id": "12340026",
+      "domain": "unit.tests",
+      "host": "_pop3._tcp",
+      "ttl": "600",
+      "prio": "0",
+      "type": "SRV",
+      "rdata": "0 0 0 .",
+      "geozone_id": "0",
+      "last_mod": "2020-01-01 01:01:01"
     }
   ],
-  "count": 24,
-  "total": 24,
+  "count": 26,
+  "total": 26,
   "start": 0,
   "max": 1000,
   "status": 200

tests/test_octodns_provider_easydns.py

@@ -80,14 +80,14 @@ class TestEasyDNSProvider(TestCase):
                          text=fh.read())
 
                 provider.populate(zone)
-                self.assertEquals(13, len(zone.records))
+                self.assertEquals(15, len(zone.records))
                 changes = self.expected.changes(zone, provider)
                 self.assertEquals(0, len(changes))
 
         # 2nd populate makes no network calls/all from cache
         again = Zone('unit.tests.', [])
         provider.populate(again)
-        self.assertEquals(13, len(again.records))
+        self.assertEquals(15, len(again.records))
 
         # bust the cache
         del provider._zone_records[zone.name]
@@ -379,7 +379,7 @@ class TestEasyDNSProvider(TestCase):
         self.assertEquals(n, provider.apply(plan))
         self.assertFalse(plan.exists)
 
-        self.assertEquals(23, provider._client._request.call_count)
+        self.assertEquals(25, provider._client._request.call_count)
 
         provider._client._request.reset_mock()