Remove some deprecated config options

Heat's [DEFAULT] deferred_auth_method is deprecated, and we are setting
the default value of 'trusts'.

Glance's [DEFAULT] registry_host is deprecated, and we do not deploy a
registry.

Change-Id: I80024907c575982699ce323cd9a93bab94c988d3

ansible/roles/glance/templates/glance-api.conf.j2

@@ -9,8 +9,6 @@ bind_host = {{ api_interface_address }}
 bind_port = {{ glance_api_listen_port }}
 workers = {{ openstack_service_workers }}
 
-registry_host = {{ glance_internal_fqdn }}
-
 {% if glance_backend_ceph | bool %}
 show_multiple_locations = True
 {% endif %}

ansible/roles/heat/templates/heat.conf.j2

@@ -12,8 +12,6 @@ stack_domain_admin = heat_domain_admin
 stack_domain_admin_password = {{ heat_domain_admin_password }}
 stack_user_domain_name = heat_user_domain
 
-deferred_auth_method = trusts
-
 {% if service_name == 'heat-engine' %}
 num_engine_workers = {{ openstack_service_workers }}
 {% endif %}