When returning the list of packages, cover the new branch request messages
When returning the list of packages, cover the new branch request messages

In these messages the place where the information about the package is
is different from the new package request messages.
With this commit we support both message type.

Ghost-script/fedmsg_meta_fedora_infrastructure,sayanchowdhury/fedmsg_meta_fedora_infrastructure,opoplawski/fedmsg_meta_fedora_infrastructure,fedora-infra/fedmsg_meta_fedora_infrastructure