Update .gitreview

Sync with release 2.17.0

Revert "if we have a valid auth token, use it instead of generating a new one"

This reverts commit 01a02b9738224d93124d3561e194a48d55f69456.  This code
is already merged upstream, so this commit is in conflict.

Change-Id: I4fbc29b90028aeb955f4b158eba5a2b6bbe0b654