Comment 8 for bug 1478660

This problem does not apply to KVM instances, but if using a proxy when deploying with KVM, users must include "http://" or "https://" in their proxy settings, or else the deploy will fail with a vague exit code 1 error. This stems from the uvt-simplestreams-libvirt command returning this error when not using "http://" or "https://":

Proxy URLs must have explicit schemes