Description of Sheepdog configuration options

Configuration option = Default value	Description
[glance_store]
sheepdog_store_address = localhost	(StrOpt) IP address of sheep daemon.
sheepdog_store_chunk_size = 64	(IntOpt) Images will be chunked into objects of this size (in megabytes). For best performance, this should be a power of two.
sheepdog_store_port = 7000	(IntOpt) Port of sheep daemon.