Allocate whole node in with --exclusive

With select/cons_res plugin and a job using the --exclusive option
if the partition supports gang scheduling or mutliple jobs per node,
then allocate CPUs to multiple jobs, but allocate the job every
CPU on each node.

src/plugins/select/cons_res/dist_tasks.c

@@ -899,7 +899,8 @@ extern int cr_dist(struct job_record *job_ptr, const uint16_t cr_type)
 {
 	int error_code, cr_cpu = 1;
 
-	if ((job_ptr->job_resrcs->node_req == NODE_CR_RESERVED) &&
+	if (((job_ptr->job_resrcs->node_req == NODE_CR_RESERVED) ||
+	     (job_ptr->details->whole_node != 0)) &&
 	    (job_ptr->details->core_spec == 0)) {
 		/* the job has been allocated an EXCLUSIVE set of nodes,
 		 * so it gets all of the bits in the core_bitmap and