Issue 49761 - Fix CI test suite issues
    
    Description:
    Fixing failing ticket48755_test.py, so it would pass nightly tests.
    Also moved the test from tickets to suites/replication/regressions_test.py
    
    This code is NOT IN MERGEABLE state.
    The test passes on Fedora, RHEL7 and RHEL8
    but I could use an advice with how to replace "search_s"
    so the test wouldn't use deprecated features, please.
    
    Relates: https://pagure.io/389-ds-base/issue/48755
    Relates: https://pagure.io/389-ds-base/issue/49761
    
    Reviewed by: vashirov (Thanks!)