cleanup bigquery filenames to one spot
diff --git a/planetstack/hpc_wizard/bigquery_config.py b/planetstack/hpc_wizard/bigquery_config.py
new file mode 100644
index 0000000..0ed1f80
--- /dev/null
+++ b/planetstack/hpc_wizard/bigquery_config.py
@@ -0,0 +1,3 @@
+BIGQUERY_DIR = "/opt/planetstack"
+BIGQUERY_SECRETS_FN = os.path.join(BIGQUERY_DIR, "client_secrets.json")
+BIGQUERY_CREDENTIALS_FN = os.path.join(BIGQUERY_DIR, "bigquery_credentials.dat")