Adding x-request-reason to python google cloud clients

main.py

import google.auth
from google.oauth2 import service_account
from google.cloud import storage
from google.cloud import pubsub_v1

## requirements.txt
# google-cloud-storage
# google-cloud-pubsub
# requests
# google-api-python-client
# httplib2
# google-cloud-compute-v2
# google-cloud-compute


# https://github.com/salrashid123/request_reason

credentials, project = google.auth.default()    
project='core-eso'

### Storage
client = storage.Client(project=project, extra_headers={'X-Goog-Request-Reason':'bar'})
for b in client.list_buckets():
   print(b.name)

   
### Compute
from google.cloud import compute_v1
client = compute_v1.InstancesClient()
request = compute_v1.ListInstancesRequest(
  project="core-eso",
  zone="us-central1-a"
)
page_result = client.list(request=request, metadata=[('x-goog-request-reason','bar')])
for response in page_result:
  print(response)


### OrgPolicy
from google.cloud import orgpolicy_v2
client = orgpolicy_v2.OrgPolicyClient()
request = orgpolicy_v2.ListConstraintsRequest(parent='projects/995081019036')
response = client.list_constraints(request=request, metadata=[('x-goog-request-reason','bar')])
for constraint in response.constraints:
  print(f"Constraint Name: {constraint.name}")
   

### Pubsub
publisher = pubsub_v1.PublisherClient()
project_path = f"projects/{project}"
for topic in publisher.list_topics(request={"project": project_path}, metadata=[('x-goog-request-reason','bar')]):
  print(topic)


### logging

from google.cloud.logging_v2.services import logging_service_v2
client = logging_service_v2.LoggingServiceV2Client()
project_path = client.common_project_path('core-eso')
entries = client.list_log_entries(
    resource_names=[project_path],
    filter='severity >= WARNING AND resource.type = "cloud_run_revision"',
    order_by="timestamp desc",
    metadata=[('x-goog-request-reason','bar')]
)
for entry in entries:
  print(f"Timestamp: {entry.timestamp}, Severity: {entry.severity}, Text Payload: {entry.proto_payload}")