nscd should be disabled before sssd is configured/started.
    
    If not then sssd spits out a warning message:
    
    sssd: nscd socket was detected.  As nscd caching capabilities may conflict
    with SSSD, it is recommended to not run nscd in parallel with SSSD
    
    Stop nscd before configuring sssd so we don't confuse our users.
    
    ticket 743