[TripleO][CI] Outage on the rdoprojects.org server is causing jobs to fail

Hi, this weekend, and outage caused trunk.rdoprojects.org servers to become unreachable. As main effect, all tripleo ci jobs were unable to download and install dlrn repositories for the needed hashes and failed. The outage has been resolved yesterday but there's a problem with DNS propagation and we're still seeing DNS queries returning incorrect IPs, and as a result, jobs are not consistently passing. You may see problems dowloading repos, building changes, installing packages We would advise to limit the rechecks until we are sure the DNS results are stable. Thanks.