7703649 Ticket #48748 - Fix memory_leaks test suite teardown failure

Authored and Committed by spichugi 5 years ago
    Ticket #48748 - Fix memory_leaks test suite teardown failure
    
    Bug Description: TearDown part of memory_leaks/range_search_test.py
    goes with error. Because of that valgrind_disable(sbin_dir) is
    never executed. It causes all next setup-ds.pl commands fail.
    
    Fix Description: Change topology.standalone object to just standalone.
    Otherwise, it is not found.
    
    https://fedorahosted.org/389/ticket/48748
    
    Reviewed by: mreynolds (Thanks!)
    
    (cherry picked from commit 797786d5329ebb13527fbaa7410b1f0901d28bb3)