Enable heat support in telemetry-tempest-plugin

* Due to tempest plugin split migration and deprecation of
  `orchestration` flag in heat which is replaced with
  heat_plugins leads to skipping telemetry scenario tests.
* It updates the same and enable tests for the same.

Change-Id: Idd12dcb05322737b3d9b72eac902b969252ee4c3
diff --git a/.zuul.yaml b/.zuul.yaml
index 01d6e87..d946983 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -10,6 +10,8 @@
       - openstack/ceilometer
       - openstack/panko
       - openstack/telemetry-tempest-plugin
+      - openstack/heat-tempest-plugin
+      - openstack/heat
       # following are required when DEVSTACK_GATE_HEAT, which this
       # job turns on
       - openstack/dib-utils