ansible: create the conf disk via ansible module
ansible: create the conf disk via ansible module

Now that the engine could identify the configuration
disk by a uuid in the engine DB there is no need to
directly create it via REST API to set a custom
description.

Change-Id: If9d6102a258a820bdb90e7f32cf4c468b29a4d0c
Signed-off-by: Simone Tiraboschi <cb03129c66ba4da7ba7044049d0f43907bf857bb@redhat.com>

oVirt/ovirt-hosted-engine-setup,oVirt/ovirt-hosted-engine-setup