Ticket 47394 - remove-ds.pl should remove /var/lock/dirsrv
    
    Bug Description:  Once a DS instance has been created, /var/lock/dirsrv, /var/lib/dirsrv, and /var/run/dirsrv
                      are owned by the user that was specified when the instance was created. Then remove this
                      single instance, and create a new instance that runs as a different user.  The install will fail.
    
    Fix Description:  When removing the last instance on the machine, remove the /var/lock|run|lib/dirsrv/ directories.
    
    https://fedorahosted.org/389/ticket/47394
    
    Reviewed by: richm(Thanks!)