Add heat-agents as required project

We removed[1] these scripts from heat-templates.

[1] https://review.openstack.org/#/c/584777/

Change-Id: I6f0989a5cf4cf6253ff64a8c3c1ea023dd8b6db7

.zuul.yaml

@@ -18,6 +18,7 @@
       - openstack/oslo.messaging
       - openstack/python-barbicanclient
       - openstack/python-heatclient
+      - openstack/heat-agents
       - openstack/python-zaqarclient
       - openstack/zaqar
     irrelevant-files:

heat_integrationtests/prepare_test_env.sh

@@ -77,7 +77,7 @@ function _config_tempest_plugin
     local conf_file=$CONF_DEST/tempest/etc/tempest.conf
     iniset_multiline $conf_file service_available heat_plugin True
     _config_iniset $conf_file
-    iniset $conf_file heat_plugin heat_config_notify_script $CONF_DEST/heat-templates/hot/software-config/elements/heat-config/bin/heat-config-notify
+    iniset $conf_file heat_plugin heat_config_notify_script $CONF_DEST/heat-agents/heat-config/bin/heat-config-notify
     iniset $conf_file heat_plugin boot_config_env $CONF_DEST/heat-templates/hot/software-config/boot-config/test_image_env.yaml
 
     # Skip SoftwareConfigIntegrationTest because it requires a custom image

playbooks/devstack/functional/run.yaml

@@ -52,6 +52,7 @@
           export PROJECTS="openstack/ceilometer $PROJECTS"
           export PROJECTS="openstack/aodh $PROJECTS"
           export PROJECTS="openstack/zaqar $PROJECTS"
+          export PROJECTS="openstack/heat-agents $PROJECTS"
           export PROJECTS="openstack/python-zaqarclient $PROJECTS"
           export PROJECTS="openstack/neutron $PROJECTS"
           export DEVSTACK_LOCAL_CONFIG+=$'\n'"enable_plugin ceilometer git://git.openstack.org/openstack/ceilometer"