mtr: s/mysqltest_embedded/mariadb-test-embedded/

avoid deprecation warning

mysql-test/mariadb-test-run.pl

@@ -1877,8 +1877,8 @@ sub executable_setup () {
   if ( $opt_embedded_server )
   {
     $exe_mysqltest=
-      mtr_exe_exists("$bindir/libmysqld/examples$multiconfig/mysqltest_embedded",
-                     "$path_client_bindir/mysqltest_embedded");
+      mtr_exe_exists("$bindir/libmysqld/examples$multiconfig/mariadb-test-embedded",
+                     "$path_client_bindir/mariadb-test-embedded");
   }
   else
   {

mysql-test/suite/sys_vars/t/version.test

 SELECT @@version;
 perl;
-  $cnt= $ENV{MYSQL_TEST} =~ /mysqltest_embedded / ? 1 :
+  $cnt= $ENV{MYSQL_TEST} =~ /embedded / ? 1 :
         grep /my_favorite_version/, `$ENV{MYSQL} -e status`;
   print "$cnt\n";
 EOF