Add support for tag expiration based on a quay.expires-after label

endpoints/v2/models_interface.py

@@ -256,3 +256,11 @@ class DockerRegistryV2DataInterface(object):
     Once everything is moved over, this could be in util.registry and not even touch the database.
     """
     pass
+
+  @abstractmethod
+  def set_manifest_expires_after(self, namespace_name, repo_name, digest, expires_after_sec):
+    """
+    Sets that the manifest with given digest expires after the number of seconds from *now*.
+    """
+    pass
+