Fix the generation of a multi-level proxy

t/setup.sh

@@ -84,8 +84,7 @@ chmod 600 "${certs_dir}"/${proxy_name}.key.pem
 
 # proxy chain with 3 delegations, without VOMS attributes
 proxy_name=6
-# the following command fails with "validation error: unable to get issuer certificate [subject=/C=IT/O=IGI/CN=Test0/CN=730308951,issuer=/C=IT/O=IGI/CN=Test0]", but it can be ignored
-voms-proxy-init2 -cert "${certs_dir}"/3.cert.pem -key "${certs_dir}"/3.key.pem --certdir trust-anchors --out "${certs_dir}"/${proxy_name}.pem || true
+env X509_USER_PROXY="${certs_dir}/3.pem" X509_CERT_DIR="${ta_dir}" voms-proxy-init2 --out "${certs_dir}"/${proxy_name}.pem -noregen -dont-verify-ac
 awk '/BEGIN CERTIFICATE/,/END CERTIFICATE/' "${certs_dir}"/${proxy_name}.pem > "${certs_dir}"/${proxy_name}.cert.pem
 awk '/BEGIN RSA PRIVATE KEY/,/END RSA PRIVATE KEY/' "${certs_dir}"/${proxy_name}.pem > "${certs_dir}"/${proxy_name}.key.pem
 chmod 600 "${certs_dir}"/${proxy_name}.key.pem