There's no reason to process overrides outside the client section
in this role; most of the options provided by CephConfigOverrides
are used by the ceph server daemons, and can be ignored here.
This change just removes the involved code, leaving the ability
to process the client section only.
The tripleo_ceph_client role is supposed to replace the ceph-ansible
client and work for both cephadm and ceph-ansible based deployments.
The purpose of this role is to work with both internal and external
ceph, processing the input provided, generating the Ceph clients
(Nova, Cinder, Glance, Manila) configuration (keys and ceph.conf)
and push the generated files to the 'clients' group provided by the
Implements: blueprint tripleo-ceph-client