Description of cluster configuration options

Configuration option = Default value	Description
[DEFAULT]
cluster_delete_time_out = 180	(IntOpt) Maximum time (in seconds) to wait for a cluster delete.
cluster_usage_timeout = 36000	(IntOpt) Maximum time (in seconds) to wait for a cluster to become active.
clusters_page_size = 20	(IntOpt) Page size for listing clusters.