There seems to be issue with the google people api.
If you go to the following link to test out the api, https://developers.google.com/apis-explorer/#p/people/v1/people.people.connections.list
try:
GET https://people.googleapis.com/v1/people/me/connections?sortOrder=FIRST_NAME_ASCENDING&fields=connections(emailAddresses%2Cnames)&key={YOUR_API_KEY}
The results does not display the email address of the contact even thou it is specified in the fields.
Thanks, Derek