Move Verizon endpoint config into plugin

external_plugins/verizon/__init__.py

@@ -1,3 +1,5 @@
+import os
+
 from dns_sync.adapters import (
     DNS_RECORDS,
     ApplyResult,
@@ -13,12 +15,20 @@ from dns_sync.adapter_support import (
     require_desired,
     require_endpoint_plugin,
 )
+from dns_sync.config import parse_endpoint_list
 from dns_sync.models import DesiredRecord
 from .provider import Plugin as VerizonProvider
 
 
 def configured_endpoints(config):
-    return config.verizon_endpoints
+    return parse_endpoint_list(
+        "verizon",
+        os.getenv(
+            "VERIZON_ENDPOINTS",
+            "192.168.1.1",
+        ),
+        443,
+    )
 
 
 class Plugin: