[bug] fail to init on GCP

Describe the bug I try to init skyplane on GCP, but failed due to setIamPolicy failure

To Reproduce

$ skyplane init

(1) Configuring AWS:
    Do you want to configure AWS support in Skyplane? [Y/n]: n
    Disabling AWS support

(2) Configuring Azure:
    Do you want to configure Azure support in Skyplane? [Y/n]: n
    Disabling Azure support

(3) Configuring GCP:
    Do you want to configure GCP support in Skyplane? [Y/n]: Y
    GCP region config missing! GCP will be reconfigured.
    GCP credentials found in GCP CLI
    GCP credentials found, do you want to enable GCP support in Skyplane? [Y/n]: Y
    Enter the GCP project ID [ecker-bican]:
    Using GCP service account skyplane-manual
    Error saving GCP region config
    <HttpError 403 when requesting https://cloudresourcemanager.googleapis.com/v1/projects/ecker-bican:setIamPolicy?alt=json returned "Policy update access denied.". Details: "Policy update access denied.">
Traceback (most recent call last):
  File "/Users/hanqingliu/mambaforge/lib/python3.10/site-packages/skyplane/cli/cli_impl/init.py", line 260, in load_gcp_config
    auth.save_region_config()
  File "/Users/hanqingliu/mambaforge/lib/python3.10/site-packages/skyplane/utils/imports.py", line 33, in wrapped
    return fn(*modules_imported, *args, **kwargs)
  File "/Users/hanqingliu/mambaforge/lib/python3.10/site-packages/skyplane/compute/gcp/gcp_auth.py", line 32, in save_region_config
    service_account_credentials_file = self.service_account_credentials  # force creation of file
  File "/Users/hanqingliu/mambaforge/lib/python3.10/site-packages/skyplane/compute/gcp/gcp_auth.py", line 68, in service_account_credentials
    self._service_account_email = self.create_service_account(self.service_account_name)
  File "/Users/hanqingliu/mambaforge/lib/python3.10/site-packages/skyplane/compute/gcp/gcp_auth.py", line 179, in create_service_account
    return retry_backoff(read_modify_write)  # retry loop needed for concurrent policy modifications
  File "/Users/hanqingliu/mambaforge/lib/python3.10/site-packages/skyplane/utils/retry.py", line 30, in retry_backoff
    raise e
  File "/Users/hanqingliu/mambaforge/lib/python3.10/site-packages/skyplane/utils/retry.py", line 27, in retry_backoff
    return fn()
  File "/Users/hanqingliu/mambaforge/lib/python3.10/site-packages/skyplane/compute/gcp/gcp_auth.py", line 176, in read_modify_write
    service.projects().setIamPolicy(resource=self.project_id, body={"policy": policy}).execute()
  File "/Users/hanqingliu/mambaforge/lib/python3.10/site-packages/googleapiclient/_helpers.py", line 130, in positional_wrapper
    return wrapped(*args, **kwargs)
  File "/Users/hanqingliu/mambaforge/lib/python3.10/site-packages/googleapiclient/http.py", line 938, in execute
    raise HttpError(resp, content, uri=self.uri)
googleapiclient.errors.HttpError: <HttpError 403 when requesting https://cloudresourcemanager.googleapis.com/v1/projects/ecker-bican:setIamPolicy?alt=json returned "Policy update access denied.". Details: "Policy update access denied.">

    Disabling Google Cloud support

Config file saved to /Users/hanqingliu/.skyplane/config
To disable performance logging info:
https://skyplane.org/en/latest/performance_stats_collection.html

Environment info (please complete the following information):

OS: Mac OS
Python 3.10.10
Skyplane 0.2.1

Additional context We have an institution cloud admin who helps creating projects. My account probably doesn't have permission to set IAMs for skyplane service account.

Thanks!

skyplane-project / skyplane

[bug] fail to init on GCP #875