Need to change Authentication to Authorization in request header

[arenddittmer]

In which file did you encounter the issue?

https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/compute/auth/access_token.py

Did you change the file? If so, how?

diff access_token.py access_token_fixed.py
54c54
< 'Authentication': 'Bearer {}'.format(access_token)

    'Authorization': 'Bearer {}'.format(access_token)

Describe the issue

Token retrieval requires 'Authorization' header