Update HTTPS certificates based on Requests

This updates the HTTPS certificates based on this version in the Requests
library:

https://raw.github.com/kennethreitz/requests/b66427eab95298a4a42d0801873b3d3e5d6c3b0f/requests/cacert.pem

Change-Id: I5e69576af900dd209f71fe878a97569157c44275
Merge "Update HTTPS certificates based on Requests"