Ticket #47657 add schema test suite and tests for Ticket #47634
    
    https://fedorahosted.org/389/ticket/47657
    Reviewed by: tbordaz (Thanks!)
    Branch: master
    Fix Description: Add tests for schema ticket #47634.  This also adds a suites
    subdirectory to dirsrvtests and a schema subdirectory of suites.
    Platforms tested: RHEL6 x86_64
    Flag Day: no
    Doc impact: no