Fix features_lvm_backend_volume classes names

Change-Id: I87967de10eb7629e57693980f578ef04eb1076c3
diff --git "a/\173\043 roles \043\175/features_lvm_backend_volume_sdb" "b/\173\043 roles \043\175/features_lvm_backend_volume_sdb"
index 05a7bf0..2f5a69d 100644
--- "a/\173\043 roles \043\175/features_lvm_backend_volume_sdb"
+++ "b/\173\043 roles \043\175/features_lvm_backend_volume_sdb"
@@ -6,4 +6,4 @@
         <reclass_storage_node_name>:
           classes:
 #}
-          - environment.{{ cookiecutter._env_name }}.features.lvm_backend.control
+          - environment.{{ cookiecutter._env_name }}.features.lvm_backend.volume_sdb