Added the registry_project_id variable to the test script.

Author: mmontan

test/setup/make_source.sh

@@ -19,6 +19,9 @@ echo "#!/usr/bin/env bash" > ../source.sh
 project_id=$(terraform output project_id)
 echo "export TF_VAR_project_id='$project_id'" >> ../source.sh
 
+# We use the same project for registry project in the tests.
+echo "export TF_VAR_registry_project_id='$project_id'" >> ../source.sh
+
 sa_json=$(terraform output sa_key)
 # shellcheck disable=SC2086
 echo "export SERVICE_ACCOUNT_JSON='$(echo $sa_json | base64 --decode)'" >> ../source.sh