MDEV-8379 - SUSE mariadb patches

Let mysql_upgrade return zero exit status when installation is up to date.

client/mysql_upgrade.c

@@ -1061,7 +1061,7 @@ int main(int argc, char **argv)
     printf("This installation of MySQL is already upgraded to %s, "
            "use --force if you still need to run mysql_upgrade\n",
            MYSQL_SERVER_VERSION);
-    die(NULL);
+    goto end;
   }
 
   if (opt_version_check && check_version_match())
@@ -1084,6 +1084,7 @@ int main(int argc, char **argv)
   /* Create a file indicating upgrade has been performed */
   create_mysql_upgrade_info_file();
 
+end:
   free_used_memory();
   my_end(my_end_arg);
   exit(0);

mysql-test/t/mysql_upgrade.test

@@ -14,7 +14,6 @@ file_exists $MYSQLD_DATADIR/mysql_upgrade_info;
 
 --echo Run it again - should say already completed
 --replace_result $MYSQL_SERVER_VERSION VERSION
---error 1
 --exec $MYSQL_UPGRADE 2>&1
 
 # It should have created a file in the MySQL Servers datadir