Move Verizon endpoint config into plugin

tests/test_verizon_adapter.py

@@ -13,7 +13,10 @@ from dns_sync.adapters import (
 )
 from dns_sync.config import AppConfig
 from dns_sync.models import ProviderRecord
-from dns_sync.registry import load_adapter
+from dns_sync.registry import (
+    configured_adapter_endpoints,
+    load_adapter,
+)
 
 
 class VerizonAdapterTests(unittest.TestCase):
@@ -57,10 +60,15 @@ class VerizonAdapterTests(unittest.TestCase):
                 "VerizonProvider",
                 return_value=provider,
             ):
+                endpoint = configured_adapter_endpoints(
+                    "verizon",
+                    config,
+                )[0]
+
                 return load_adapter(
                     "verizon",
                     config,
-                    config.verizon_endpoints[0],
+                    endpoint,
                 )
 
     @staticmethod
@@ -143,10 +151,15 @@ class VerizonAdapterTests(unittest.TestCase):
             clear=True,
         ):
             config = AppConfig.from_env()
+            endpoint = configured_adapter_endpoints(
+                "verizon",
+                config,
+            )[0]
+
             adapter = load_adapter(
                 "verizon",
                 config,
-                config.verizon_endpoints[0],
+                endpoint,
             )
 
         self.assertEqual(