Disable test when only one job can run at a time

Disable test with select/linear and only one node

testsuite/expect/test2.8

@@ -36,17 +36,29 @@ source ./globals
 set test_id     "2.8"
 set exit_code   0
 set file_in     "test$test_id.input"
+set is_bluegene 0
 set job_id1     0
 set job_id2     0
 
 print_header $test_id
 
+set select_type [test_select_type]
+if {![string compare $select_type "bluegene"]} {
+	set is_bluegene 1
+} elseif {![string compare $select_type "linear"]} {
+	set def_part_name [default_partition]
+	set nb_nodes [get_node_cnt_in_part $def_part_name]
+	if {$nb_nodes < 2} {
+		send_user "\nWARNING: This test is incompatible with select/linear and only one node\n"
+		exit $exit_code
+	}
+}
+
 if {[test_launch_poe]} {
 	set step_id 1
 } else {
 	set step_id 0
 }
-set is_bluegene [test_bluegene]
 
 #
 # Build input script file