Cleanups & indentation changes

- Only indentation changes in sql_rename.cc
- Ignore some WSREP error messages when there isn't a internet connection
- Force restart of stat_tables_part.test to make result stable
- Fixed compiler warnings in CONNECT

mysql-test/main/stat_tables_par_innodb.result

@@ -1,3 +1,4 @@
+# restart
 SET SESSION DEFAULT_STORAGE_ENGINE='InnoDB';
 set @save_optimizer_switch_for_stat_tables_test=@@optimizer_switch;
 set optimizer_switch='extended_keys=on';