Add file id and name informations in files/:id/junit endpoint

To improve the user interface, we need the file name when we get the junit endpoint.

Change-Id: I009ddfc0d17c869b8dfaed439dc8f23ff6574a97

dci/api/v1/files.py

@@ -378,6 +378,8 @@ def get_junit_file(user, file_id):
     return flask.Response(
         json.dumps(
             {
+                "id": str(file_id),
+                "name": file.name,
                 "job": {"id": job.id, "name": job.name},
                 "previous_job": previous_job_info,
                 "testsuites": junit.update_testsuites_with_testcase_changes(

tests/api/v1/test_files.py

@@ -368,6 +368,8 @@ def test_get_junit_file(_, user, job_user):
     )["id"]
     data = user.get("/api/v1/files/%s/junit" % junit_id).data
     assert len(data["testsuites"]) == 1
+    assert data["id"] == junit_id
+    assert data["name"] == "Tempest"
     assert data["job"]["id"] == job_user["id"]
     assert data["job"]["name"] == job_user["name"]
     assert data["previous_job"] is None