Migrate to new test status file syntax

test/benchmarks/benchmarks.status

Index: test/benchmarks/benchmarks.status
diff --git a/test/benchmarks/benchmarks.status b/test/benchmarks/benchmarks.status
index 651b8d7ad1a5a0abbfaa693b671fab6288d2106b..103eaeb126217b4710f574591386ffc73072af8d 100644
--- a/test/benchmarks/benchmarks.status
+++ b/test/benchmarks/benchmarks.status
@@ -25,5 +25,9 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-# Too slow in Debug mode.
-octane/mandreel: PASS, SKIP if $mode == debug
+[
+['mode == debug', {
+  # Too slow in Debug mode.
+  'octane/mandreel': [SKIP],
+}],  # 'mode == debug'
+]