cloud-infra: Set the provisioner type

Heat is now supported in addition to bifrost so the determination
of the provisioner and the temporary SDF are updated accordingly.

Change-Id: I01a48c5f54d2386fca8c3c90fe38daccd1d7dfd4
diff --git a/jjb/cloud-infra/prepare-for-scenario-deploy.sh b/jjb/cloud-infra/prepare-for-scenario-deploy.sh
index 9729dd8..0b469c3 100644
--- a/jjb/cloud-infra/prepare-for-scenario-deploy.sh
+++ b/jjb/cloud-infra/prepare-for-scenario-deploy.sh
@@ -33,6 +33,8 @@
     src: $PROJECT_GIT_URL
     version: $GERRIT_PATCHSET_REVISION
     refspec: $GERRIT_REFSPEC
+    provisioners:
+      - $PROVISIONER_TYPE
     installers:
       $INSTALLER_TYPE:
         role: scenarios/$DEPLOY_SCENARIO/$INSTALLER_TYPE/role/$DEPLOY_SCENARIO