IssueTracker

This error means that there are SSL issues when connecting to any of those URLs–do you have any unusual proxy or network settings? You may need to configure gcloud to use them. Or were you behind a captive portal at the time you ran this?

Nothing unusual with proxy or network.. Normal NAT behind home router.  Not experiencing anything unusual elsewhere with SSL connect to Google (and others).
---
What do you mean by "captive portal"?
---
Also, get this with "gcloud auth login" after the browser completes:
ERROR: (gcloud.auth.login) [Errno 185090050] _ssl.c:344: error:0B084002:x509 certificate routines:X509_load_cert_crl_file:system lib
This may be due to network connectivity issues. Please check your network settings, and the status of the service you are trying to reach.
---
FWIW, am trying to reach nlp api.
---
From the QuickStart:

curl -s -k \
   -H "Content-Type: application/json" \
   -H "Authorization: Bearer TESTTEST" \
   https://language.googleapis.com/v1beta1/documents:analyzeEntities \
   -d @entity-request.json

produces:
 
{
  "error": {
    "code": 401,
    "message": "Request had invalid authentication credentials.",
    "status": "UNAUTHENTICATED"
  }
}

which indicates SSL is working through curl...