Add methods needed for passing policy check

They're probably needed for:
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/20729

app/models/deploy_token.rb

@@ -3,6 +3,8 @@ class DeployToken < ActiveRecord::Base
   include TokenAuthenticatable
   add_authentication_token_field :token
 
+  prepend EE::DeployToken
+
   AVAILABLE_SCOPES = %i(read_repository read_registry).freeze
   GITLAB_DEPLOY_TOKEN_NAME = 'gitlab-deploy-token'.freeze
 

ee/app/models/ee/deploy_token.rb

+module EE
+  module DeployToken
+    def auditor?
+      false
+    end
+
+    def support_bot?
+      false
+    end
+  end
+end