Without this patch it is not possible to have an override of
the helm values for the ingress controllers.
This is a problem, as this is inconsistent with other components
and this has reduced flexibility.
This patch solves the problem by exposing two extra overrides
for ingress: $OSH_EXTRA_HELM_ARGS_INGRESS_ceph and
$OSH_EXTRA_HELM_ARGS_INGRESS_openstack, next to the usual
$OSH_EXTRA_HELM_ARGS
Change-Id: I5b56941a6e9a585b9398099c632df349414112fa
7a42e7c383