Let adapter plugins provide configured endpoints

external_plugins/verizon/__init__.py

@@ -17,6 +17,10 @@ from dns_sync.models import DesiredRecord
 from .provider import Plugin as VerizonProvider
 
 
+def configured_endpoints(config):
+    return config.verizon_endpoints
+
+
 class Plugin:
     name = "verizon"
     capabilities = frozenset(