problematic default setting for rsa_cert_file. Upstream
initializes that value to "/usr/share/ssl/certs/vsftpd.pem" and
vsftpd won't start up if that file does not exist (or if does not
contain an RSA certificate). Therefore, users who copy a DSA
certificate into that location or properly configure a DSA
certificate via dsa_cert_file without explicitly disabling the
RSA certificate won't be able to start vsftpd. [bsc#975538]
OBS-URL: https://build.opensuse.org/package/show/network/vsftpd?expand=0&rev=131
