This adds the storage definition to the storage proxy swagger definition
file.
It adds the definitions for the following command:
get_cas_write_metrics_unfinished_commit
get_cas_write_metrics_contention
get_cas_write_metrics_condition_not_met
get_cas_read_metrics_unfinished_commit
get_cas_read_metrics_contention
get_cas_read_metrics_condition_not_met
get_read_metrics_timeouts
get_read_metrics_unavailables
get_range_metrics_timeouts
get_range_metrics_unavailables
get_write_metrics_timeouts
get_write_metrics_unavailables
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>