Add isort to workflow (#8)

* Add isort to workflow

* Fail on error

* Fix issue found by isort

* Fix typo in isort

* Fix isort

.github/workflows/psm-interop.yaml

@@ -85,3 +85,12 @@ jobs:
           with:
              options: "--check --config black.toml"
              version: "23.3.0"
+
+  isort-check:
+    runs-on: ubuntu-latest
+    steps:
+        - uses: actions/checkout@v4
+        - uses: isort/isort-action@v1
+          with:
+            configuration: "--diff --check-only --dont-follow-links --settings-path=black.toml"
+            isort-version: "5.9.2"

framework/rpc/grpc_testing.py

@@ -16,16 +16,14 @@
 https://github.com/grpc/grpc/blob/master/src/proto/grpc/testing/test.proto
 """
 import logging
+import sys
 from typing import Iterable, Optional, Tuple
 
 import grpc
 from grpc_health.v1 import health_pb2
 from grpc_health.v1 import health_pb2_grpc
 
 import framework.rpc
-import sys
-
-print(f">>>>path: {sys.path}")
 from protos import empty_pb2
 from protos import messages_pb2
 from protos import test_pb2_grpc