This is for running the integrations tests on a k8s pod, with applicaiton default credentials.
Example usage:
IMAGE_NAME=us.gcr.io/my-registry/spydra/spydra-integration-test \
IMAGE_TAG=-test-1 \
SPYDRA_TEST_BUCKET=my-bucket-for-spydra-integration-tests \
K8S_NAMESPACE=default \
K8S_POD_NAME=spydra-integration-tests \
make build publish run