Updated append_*_data_locally to create a file if it does not exist
Updated append_*_data_locally to create a file if it does not exist

stackforge/terracotta,fr34k8/openstack-neat,fr34k8/openstack-neat,beloglazov/openstack-neat,raphapr/openstack-neat,raphapr/openstack-neat,stackforge/terracotta,beloglazov/openstack-neat