Only install the first masters db and copy it for the other

Gives slightly faster startup

mysql-test/lib/mtr_misc.pl

@@ -139,6 +139,8 @@ sub mtr_copy_dir($$) {
   my $from_dir= shift;
   my $to_dir= shift;
 
+#  mtr_verbose("Copying from $from_dir to $to_dir");
+
   mkpath("$to_dir");
   opendir(DIR, "$from_dir")
     or mtr_error("Can't find $from_dir$!");

mysql-test/mysql-test-run.pl

@@ -357,6 +357,7 @@ sub run_benchmarks ($);
 sub initialize_servers ();
 sub mysql_install_db ();
 sub install_db ($$);
+sub copy_install_db ($$);
 sub run_testcase ($);
 sub run_testcase_stop_servers ($$$);
 sub run_testcase_start_servers ($);
@@ -2237,7 +2238,7 @@ sub mysql_install_db () {
 
   # FIXME not exactly true I think, needs improvements
   install_db('master', $master->[0]->{'path_myddir'});
-  install_db('master', $master->[1]->{'path_myddir'});
+  copy_install_db('master', $master->[1]->{'path_myddir'});
 
   if ( $use_slaves )
   {
@@ -2302,6 +2303,18 @@ sub mysql_install_db () {
 }
 
 
+sub copy_install_db ($$) {
+  my $type=      shift;
+  my $data_dir=  shift;
+
+  mtr_report("Installing \u$type Database");
+
+  # Just copy the installed db from first master
+  mtr_copy_dir($master->[0]->{'path_myddir'}, $data_dir);
+
+}
+
+
 sub install_db ($$) {
   my $type=      shift;
   my $data_dir=  shift;
@@ -2456,7 +2469,7 @@ sub im_prepare_data_dir($) {
 
   foreach my $instance (@{$instance_manager->{'instances'}})
   {
-    install_db(
+    copy_install_db(
       'im_mysqld_' . $instance->{'server_id'},
       $instance->{'path_datadir'});
   }