fix: Resolve issue with configuration of tokens without account privileges

[lgarber-akamai]

📝 Description

This pull request resolves an issue that would prevent tokens created without account permissions from being configured using linode-cli --configure.

Resolves #398

✔️ How to Test

1. Create a token without account permissions
2. linode-cli configure --token

[zliang-akamai]

Can the users without account permission still use linode-cli?

Never mind, sorry, misread the description.

[zliang-akamai]

Thought about it again and did some experiments with the API, the validator seems also a workable way.

How about let's checking whether the token has the account read permission in the _check_full_access function? I thought that might be better than hacking with the HTTP request validator.

linode-cli/linodecli/configuration/__init__.py

Line 340 in 4095937

is_full_access = _check_full_access(self.base_url, token)