Removing Sahara password default
Removing Sahara password default

In prior commit, added default for Sahara password in order to
avoid circular dependency. Removing this default now in order
to force password per other service definitions.

Change-Id: I91f98039e520804b25aaededefa25e80992ba6b5
Partially-implements: bp sahara-integration

openstack/tripleo-heat-templates,trozet/opnfv-tht,trozet/opnfv-tht,bcrochet/tripleo-heat-templates,openstack/tripleo-heat-templates,dprince/tripleo-heat-templates,bcrochet/tripleo-heat-templates,bcrochet/tripleo-heat-templates,dprince/tripleo-heat-templates,trozet/opnfv-tht