enable sphinx doc
diff --git a/metadata/service/control/cluster.yml b/metadata/service/control/cluster.yml
index 9b65ff9..b7367ba 100644
--- a/metadata/service/control/cluster.yml
+++ b/metadata/service/control/cluster.yml
@@ -1,5 +1,7 @@
 applications:
 - cinder
+classes:
+- service.cinder.support
 parameters:
   cinder:
     controller:
diff --git a/metadata/service/control/cluster_control.yml b/metadata/service/control/cluster_control.yml
index 9b65ff9..b7367ba 100644
--- a/metadata/service/control/cluster_control.yml
+++ b/metadata/service/control/cluster_control.yml
@@ -1,5 +1,7 @@
 applications:
 - cinder
+classes:
+- service.cinder.support
 parameters:
   cinder:
     controller:
diff --git a/metadata/service/control/single.yml b/metadata/service/control/single.yml
index 12f79f4..474af96 100644
--- a/metadata/service/control/single.yml
+++ b/metadata/service/control/single.yml
@@ -1,5 +1,7 @@
 applications:
 - cinder
+classes:
+- service.cinder.support
 parameters:
   cinder:
     controller:
diff --git a/metadata/service/volume/single.yml b/metadata/service/volume/single.yml
index 881d579..f7ea1d5 100644
--- a/metadata/service/volume/single.yml
+++ b/metadata/service/volume/single.yml
@@ -1,5 +1,7 @@
 applications:
 - cinder
+classes:
+- service.cinder.support
 parameters:
   cinder:
     volume: