Support for Let's Encrypt certificates
DataONE would like to support the new Let's Encrypt public infrastructure for server certificates. Their own (public) root certificate is not included in major browsers, so they are cross-listed with another CA that they report is included in all major browsers. (IdenTrust). see https://letsencrypt.org/certificates.
However, not all JVMs support the IdenTrust CA, so libclient_java should include either the IdenTrust root CA cert, or the Let's Encrypt one.