[benchtests] Add mandatory attributes to workload tests

Add the duration and iterations attributes to the workloads tests to
make the json schema parser happy

	* benchtests/bench-skeleton.c (main): Add duration and
	iterations attributes.

ChangeLog

@@ -1,3 +1,8 @@
+2018-08-11  Siddhesh Poyarekar  <siddhesh@sourceware.org>
+
+	* benchtests/bench-skeleton.c (main): Add duration and
+	iterations attributes.
+
 2018-08-10  Paul Eggert  <eggert@cs.ucla.edu>
 
 	regex: Gnulib unibyte RRI uses bytes not chars

benchtests/bench-skeleton.c

@@ -144,6 +144,8 @@ main (int argc, char **argv)
 
       if (is_bench)
 	{
+	  json_attr_double (&json_ctx, "duration", throughput + latency);
+	  json_attr_double (&json_ctx, "iterations", 2 * d_total_i);
 	  json_attr_double (&json_ctx, "reciprocal-throughput",
 			    throughput / d_total_i);
 	  json_attr_double (&json_ctx, "latency", latency / d_total_i);