Use project info from google-cloud-python

Author: busunkim96

.kokoro/build.sh

@@ -25,10 +25,10 @@ export PYTHONUNBUFFERED=1
 env | grep KOKORO
 
 # TODO: Set up directory with service account credentials.
-export GOOGLE_APPLICATION_CREDENTIALS=${KOKORO_GFILE_DIR}/google-cloud-python/service-account.json
+export GOOGLE_APPLICATION_CREDENTIALS=${KOKORO_GFILE_DIR}/service-account.json
 
 # TODO: Setup project id.
-export PROJECT_ID=$(cat "${KOKORO_GFILE_DIR}/google-cloud-python/project-id.json")
+export PROJECT_ID=$(cat "${KOKORO_GFILE_DIR}/project-id.json")
 
 python3.6 -m pip install nox
 python3.6 -m nox -s lint tests system_tests cover

.kokoro/presubmit.cfg

@@ -10,6 +10,9 @@ action {
 # Download trampoline resources.
 gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/trampoline"
 
+# Download resources for system tests (service account key, etc.)
+gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/google-cloud-python"
+
 # Use the trampoline script to run in docker.
 build_file: "google-cloud-python-happybase/.kokoro/trampoline.sh"