fdaa478 _check_install_source: handle 'added repo' and 'enabled repo'

Authored and Committed by adamwill 5 years ago
    _check_install_source: handle 'added repo' and 'enabled repo'
    
    The text changed from 'added repo' to 'enabled repo' in Rawhide
    after F28, so let's handle both at least till F28 is EOL.
    
    Signed-off-by: Adam Williamson <awilliam@redhat.com>