fs: SR.detach should fail with Sr_not_attached if it isn't attached
fs: SR.detach should fail with Sr_not_attached if it isn't attached

djs55/message-switch,djs55/message-switch-1,xapi-project/message-switch,xapi-project/message-switch,djs55/message-switch,djs55/message-switch-1,djs55/message-switch-1,djs55/message-switch,xapi-project/message-switch