Hello,
please note that
yum install -y https://resources.ovirt.org/pub/yum-repo/ovirt-release43-pre.rpm
yum install -y ovirt-host
is currently failing with
Error: Package: vdsm-4.30.30-1.el7.x86_64 (ovirt-4.3-pre)
           Requires: sanlock-python >= 3.7.3
           Installing: sanlock-python-3.6.0-1.el7.x86_64 (base)
               sanlock-python = 3.6.0-1.el7
Error: Package: ovirt-hosted-engine-ha-2.3.5-1.el7.noarch (ovirt-4.3-pre)
           Requires: sanlock-python >= 3.7.3
           Installing: sanlock-python-3.6.0-1.el7.x86_64 (base)
               sanlock-python = 3.6.0-1.el7
Error: Package: ovirt-hosted-engine-ha-2.3.5-1.el7.noarch (ovirt-4.3-pre)
           Requires: sanlock >= 3.7.3
           Installing: sanlock-3.6.0-1.el7.x86_64 (base)
               sanlock = 3.6.0-1.el7

Is someone already fixing this?
Dominik