rhbz#1176138 - update to v2.0.0-rc.1
    
    NVR: etcd-2.0.0-1.rc1 (not built in koji yet)
    
    This commit doesn't solve resolve rhbz#1176138 completely, as the package
    update isn't quite working as expected. More work is needed on this.
    
    Signed-off-by: Lokesh Mandvekar <lsm5@fedoraproject.org>