Add attribute for stack_scheduler_hints

Add attribute for newly option stack_scheduler_hints, related
commit is https://review.openstack.org/#/c/96889/ .

Change-Id: Ib02ff0ec8e1713f701737fa7ac95a91dd810eb01

attributes/default.rb

@@ -150,6 +150,9 @@ default['openstack']['orchestration']['stack_domain_admin'] = nil
 # Select deferred auth method, stored password or trusts.
 default['openstack']['orchestration']['deferred_auth_method'] = 'trusts'
 
+# If true, will passing stack information to scheduler hints when creating instances.
+default['openstack']['orchestration']['stack_scheduler_hints'] = false
+
 # If set, heat API service will bind to the address on this interface,
 # otherwise it will bind to the API endpoint's host.
 default['openstack']['orchestration']['api']['bind_interface'] = nil

spec/spec_helper.rb

@@ -332,6 +332,7 @@ shared_examples 'expects to create heat conf' do
           /^admin_password=heat-pass$/,
           /^admin_tenant_name=service$/,
           /^deferred_auth_method=trusts$/,
+          /^stack_scheduler_hints=false$/,
           %r{^signing_dir=/var/cache/heat$},
           /^region_name_for_services=RegionOne$/
         ].each do |line|

templates/default/heat.conf.erb

@@ -78,6 +78,17 @@ deferred_auth_method=<%= node['openstack']['orchestration']['deferred_auth_metho
 # notification module. (string value)
 #onready=<None>
 
+# When this feature is enabled, scheduler hints identifying the heat stack
+# context of a server resource are passed to the configured schedulers in nova,
+# for server creates done using heat resource types OS::Nova::Server and
+# AWS::EC2::Instance. heat_root_stack_id will be set to the id of the root
+# stack of the resource, heat_stack_id will be set to the id of the resource's
+# parent stack, heat_stack_name will be set to the name of the resource's
+# parent stack, heat_path_in_stack will be set to a list of tuples,
+# (stackresourcename, stackname) with list[0] being (None, rootstackname), and
+# heat_resource_name will be set to the resource's name. (boolean value)
+stack_scheduler_hints=<%= node["openstack"]["orchestration"]["stack_scheduler_hints"] %>
+
 
 #
 # Options defined in heat.common.config