Sorry for being a lot late with this, but I finally got around to writing the result email.
I tested:
OVIRT35 - [RFE][host-deploy] support more ciphers for ssh.
I did a basic engine install on Fedora 20. And I installed a minimal Fedora 20 for my host. After configuring the engine and starting it, I enabled sshd and configured the only cypher to be one that was not supported before. Then I added the host using webadmin and let it run until completion.
I was able to connect to the host just fine and it came up without any issues.
So in short PASS
Alexander