in the RHCOS pipeline if I start a debug pod and then try to `cosa buildfetch --url <RHCOS builds browser URL>` I get SSL errors: ``` ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self-signed certificate in certificate chain (_ssl.c:1000) ``` I thought that [pipeutils.addOptionalRootCA()](https://github.com/coreos/fedora-coreos-pipeline/blob/3732b91020f792df473879e647c30e7d026125f9/jobs/debug-pod.Jenkinsfile#L88) would have taken care of this but apparently not?