This patch removes the openstack_user resource with :grant_domain
action. A user is always created within a specific domain; such a
membership cannot be tacked on later. This resource gave the user the
role intended for their project for the domain (i.e., for the Default
domain instead of for the service project).
We add the domain_name attribute that creates the neutron user in the
desired domain. Note that this change needs a sufficiently recent
openstackclient cookbook -- otherwise the domain_name attribute is
ignored (which does not matter as long as the neutron user is to be
created in the Default domain).
Change-Id: I4b67565c9408c758acefc681dd756a1dca836ec3
c678df66d6