Enable salttest by default

Change-Id: I6d6dbcaf6c2a3322a5945de82af309087425f2df
diff --git a/metadata/service/tempest/init.yml b/metadata/service/tempest/init.yml
index bc7b690..b7e1356 100644
--- a/metadata/service/tempest/init.yml
+++ b/metadata/service/tempest/init.yml
@@ -30,6 +30,7 @@
     runtest_tempest_regenerate_conf: false
     runtest_tempest_public_net: public
     runtest_tempest_use_dynamic_credentials: true
+    runtest_salttest_enabled: true
   # This file will be last include, add pillar directly to avoid
   # variable override
   keystone:
@@ -68,6 +69,8 @@
                     auth_url: ${_param:keystone_service_protocol}://${_param:keystone_service_host}:5000
   runtest:
     enabled: true
+    salttest:
+      enabled: ${_param:runtest_salttest_enabled}
     openstack_version: stable/${_param:openstack_version}
     tempest:
       enabled: true