'Check if the instance files are shared
:param ctxt: security context
:param instance: dict of instance data
:param data: result of driver.check_instance_shared_storage_local
Returns True if instance disks located on shared storage and
False otherwise.'

@wrap_exception()
def check_instance_shared_storage(self, ctxt, instance, data):

    return self.driver.check_instance_shared_storage_remote(ctxt, data)
