Add support for specification of task distribution being sent to slurmctld

(block or cyclic).

src/srun/srun.c

@@ -345,7 +345,10 @@ create_job_step(job_t *job)
 	req.cpu_count  = opt.nprocs;
 	req.node_list  = job->nodelist;
 	req.relative   = false;
-	req.task_dist  = SLURM_DIST_CYCLIC;
+	if (opt.distribution == SRUN_DIST_BLOCK)
+		req.task_dist  = SLURM_DIST_BLOCK;
+	else if (opt.distribution == SRUN_DIST_CYCLIC)
+		req.task_dist  = SLURM_DIST_CYCLIC;
 
 	req_msg.msg_type = REQUEST_JOB_STEP_CREATE;
 	req_msg.data     = &req;