Fix minimal dependency on talloc
    
    sh$ objdump -p /usr/lib64/libtevent.so.0.9.31 | grep TALLOC
        0x0ea30320 0x00 34 TALLOC_2.1.0
        0x0ea30422 0x00 25 TALLOC_2.0.2
    
    Use renamed python2 binding for libtalloc
    dnf prefer old package with required name rather then
    new package with provides