rsyslog : Add test coverage for rsyslog issues
    
    The rsyslog test suite, at present provides coverage for bugs 1823669
    and 1823672. Later more cases will be added from downstream. Bz1823669
    highlights the avc issues related rsyslog "imfile" module, which cannot
    read parent directories of the file to process. Bz1823672 is also about
    AVCs related to browsing the parent directories when rsyslog is
    configured to write logs to a custom file.
    
    Signed-off-by: Amith Kumar <apeetham@redhat.com>