Fix Bluegene CPU count per node

The SLURM_JOB_CPUS_PER_NODE and SLURM_TASKS_PER_NODE environment
variables were being improperly set for IBM Bluegene systems

src/plugins/select/bluegene/bg_job_place.c

@@ -1318,10 +1318,7 @@ static void _build_select_struct(struct job_record *job_ptr,
 		fatal("bit_copy malloc failure");
 
 	job_resrcs_ptr->cpu_array_cnt = 1;
-	if (job_ptr->details->min_cpus < bg_conf->cpus_per_mp)
-		job_resrcs_ptr->cpu_array_value[0] = job_ptr->details->min_cpus;
-	else
-		job_resrcs_ptr->cpu_array_value[0] = bg_conf->cpus_per_mp;
+	job_resrcs_ptr->cpu_array_value[0] = bg_conf->cpu_ratio;
 	job_resrcs_ptr->cpu_array_reps[0] = node_cnt;
 	total_cpus = bg_conf->cpu_ratio * node_cnt;