increase test time window

Give test job an extra second to start. Test was failing by one
  second on kachina.

testsuite/expect/test2.7

@@ -108,7 +108,7 @@ if {$rem_time > 60} {
 	send_user "\nFAILURE: job remaining time is wrong $rem_time\n"
 	set exit_code 1
 }
-if {$rem_time < 56} {
+if {$rem_time < 55} {
 	send_user "\nFAILURE: job remaining time seems too small\n"
 	set exit_code 1
 }