BUILD: Repair dependecies on deprecated libraries
    
    Modules libsystemd-journal and libsystemd-login are
    deprecated and "libsystemd" should be used instead
    of them.
    
    Resolves:
    https://fedorahosted.org/sssd/ticket/2733
    
    Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>