wrong volume_api_class generated (cinder related)

[Evgeniy Afonichev]

Devstack provides nova.conf with
volume_api_class=nova.volume.cinder.API
which leads to "ImportError: Class CloudController cannot be found (Class API cannot be found (Class API cannot be found (No module named cinder)))" starting n-api

Replacing that line with
volume_api_class=cinder.volume.api.API
fixes the problem

[Evgeniy Afonichev (eafonichev)]

diff --git a/stack.sh b/stack.sh
index 77ef642..490237e 100755
--- a/stack.sh
+++ b/stack.sh
@@ -1858,7 +1858,7 @@ fi

 # If cinder is enabled, use the cinder volume driver
 if is_service_enabled cinder; then
- add_nova_opt "volume_api_class=nova.volume.cinder.API"
+ add_nova_opt "volume_api_class=cinder.volume.api.API"
 fi

 # Provide some transition from EXTRA_FLAGS to EXTRA_OPTS