Bug 566043 - startpid file is only cleaned by initscript runs
    
    https://bugzilla.redhat.com/show_bug.cgi?id=566043
    Resolves: bug 566043
    Branch: Directory_Server_8_2_Branch
    Bug description: startpid file is only cleaned by initscript runs
    Fix description: The start-dirsrv script has been modified to remove
    the startpid file if the server starts successfully.
    Reviewed by: rmeggins (and pushed by)
    (cherry picked from commit 0c9d4590489066d2f8dc945c9749c429972e78a9)