Reduce time for mysqladmin to try to shutdown servers from 70 to 20 seconds

mysql-test/lib/mtr_process.pl

@@ -359,7 +359,7 @@ sub mtr_kill_leftovers () {
               "socket: '$srv->{path_sock}'; ".
               "port: $srv->{port})");
 
-    my $pid= mtr_mysqladmin_start($srv, "shutdown", 70);
+    my $pid= mtr_mysqladmin_start($srv, "shutdown", 20);
 
     # Save the pid of the mysqladmin process
     $admin_pids{$pid}= 1;

mysql-test/mysql-test-run.pl

@@ -4328,7 +4328,7 @@ sub run_testcase_stop_servers($$$) {
     {
       if ( $mysqld->{'pid'} )
       {
-	$pid= mtr_mysqladmin_start($mysqld, "shutdown", 70);
+	$pid= mtr_mysqladmin_start($mysqld, "shutdown", 20);
 
 	$admin_pids{$pid}= 1;
 
@@ -4380,7 +4380,7 @@ sub run_testcase_stop_servers($$$) {
     {
       if ( $mysqld->{'pid'} )
       {
-	$pid= mtr_mysqladmin_start($mysqld, "shutdown", 70);
+	$pid= mtr_mysqladmin_start($mysqld, "shutdown", 20);
 
 	$admin_pids{$pid}= 1;