The delete command does not work for GCE

[Kumar Utsav Anand]

The delete command printed out after creating an exit node on GCE does not delete the instance until a --project-id flag is provided

Expected Behaviour

Unless until specified explicitly, the project-id should be inferred from the GCE exit node customID

Current Behaviour

Possible Solution

Pull Request for the fix: #40

Steps to Reproduce (for bugs)

1. create an instance with gce as the provider.
2. make note of the printed delete command after successful execution of the above step
3. try deleting the instance with an extra flag for the --access-token-file
4. The command would fail with an error:
   got HTTP response code 404 with body: Not Found

Your Environment

• inletsctl version
  Version: 0.4.1
  Git Commit: 3f1c896

• Operating System and version (e.g. Linux, Windows, MacOS):
  MacOS

[Adam Johnson]

I think you can close #31 as this is a duplicate of that.