Rename nova flavor for heat tempest plugin

Rename nova flavor for heat tempest plugin

Change-Id: I924e8850fdff52e7fa64efd5218fb6d5da07cd38
diff --git a/metadata/service/tempest/init.yml b/metadata/service/tempest/init.yml
index 7a23466..43b255d 100644
--- a/metadata/service/tempest/init.yml
+++ b/metadata/service/tempest/init.yml
@@ -22,8 +22,8 @@
       heat_plugin:
         skip_scenario_test_list: ${_param:runtest_heat_plugin_skip_scenario_test_list}
         skip_functional_test_list: ${_param:runtest_heat_plugin_skip_functional_test_list}
-        instance_type: 'm1.heat_int'
-        minimal_instance_type: 'm1.heat_micro'
+        instance_type: 'm1.tiny_test'
+        minimal_instance_type: 'm1.extra_tiny_test'
         auth_version: 3
         project_domain_id: default
         user_domain_id: default