ci/sssd.supp: getpwuid() leak suppression
    
    Supresses following error:
     4,096 bytes in 1 blocks are definitely lost in loss record 67 of 83
        at 0x4C2CDCB: malloc (vg_replace_malloc.c:299)
        by 0xB8F8627: ???
        by 0xB91EF3F: ???
        by 0xB90E112: ???
        by 0x9992974: getpwuid_r@@GLIBC_2.2.5 (in /usr/lib64/libc-2.26.so)
        by 0x99920D7: getpwuid (in /usr/lib64/libc-2.26.so)
    
    This https://sourceware.org/bugzilla/show_bug.cgi?id=2314#c8 might
    be related.
    
    This problem seems to be afecting Fedora < F28
    
    (cherry picked from commit 9eb8b784d4365b846f1a620f11632099d10de2c8)
    
    Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>