Use the string value instead of int in raid_bdev json info.
Rename raid_bdev_parse_raid_level() to match raid_bdev_str_to_state().
Change-Id: I135269fe6de0746e661828cb1d36514b082011bd
Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/15308
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Community-CI: Mellanox Build Bot