fix: Missing DomainControlValidation in module init

Author: coreone

cert_manager/__init__.py

@@ -4,6 +4,7 @@
 from .acme import ACMEAccount
 from .admin import Admin
 from .client import Client, OAuthClient
+from .dcv import DomainControlValidation
 from .domain import Domain
 from .organization import Organization
 from .person import Person
@@ -16,6 +17,7 @@
     "Admin",
     "Client",
     "Domain",
+    "DomainControlValidation",
     "OAuthClient",
     "Organization",
     "PendingError",