Change test due to accounting frequency change

We now reject jobs with an invalid accounting frequency at
submit time rather than launch time, so the error is slightly
different and the test needs to change for that.

testsuite/expect/test1.72

@@ -73,7 +73,7 @@ if {$sub_match != 1} {
 set sub_match 0
 spawn $srun -v --mem=200 --acctg-freq=[expr $freq_val + 10] sleep 5
 expect {
-	-re "Application launch failed: Invalid accounting" {
+	-re "Invalid accounting frequency" {
 		send_user "\nThis error is expect do not worry.\n"
 		set sub_match 1
 		exp_continue