test: use creds when testing external gs deps/outs

Signed-off-by: Ruslan Kuprieiev <[email protected]>

scripts/ci/install.sh

@@ -28,5 +28,4 @@ if [[ "$TRAVIS_PULL_REQUEST" == "false" && \
 	aws configure set region us-east-2
 
 	openssl enc -d -aes-256-cbc -md md5 -k $GCP_CREDS -in scripts/ci/gcp-creds.json.enc -out scripts/ci/gcp-creds.json
-        gcloud auth activate-service-account --key-file scripts/ci/gcp-creds.json
 fi

tests/test_repro.py

@@ -957,7 +957,7 @@ class TestReproExternalGS(TestReproExternalBase):
         return "gsutil cp {} {}".format(i, o)
 
     def write(self, bucket, key, body):
-        client = gc.Client()
+        client = gc.Client.from_service_account_json(self.GCP_CREDS_FILE)
         bucket = client.bucket(bucket)
         bucket.blob(key).upload_from_string(body)