chore: some lint fixes [(#3737)](GoogleCloudPlatform/python-docs-samples#3737)

Takashi Matsuo · busunkim96 · commit ceb7e4b5756a · 2020-08-13T00:38:14.000-07:00
diff --git a/samples/beta/set_endpoint_test.py b/samples/beta/set_endpoint_test.py
@@ -13,8 +13,10 @@
 # limitations under the License.
 
 import os
+
 import set_endpoint
 
+
 PROJECT_ID = os.environ['GCLOUD_PROJECT']
 
 
