Upgrade bazlets to latest stable-2.16 to build with 2.16.7 API
Upgrade bazlets to latest stable-2.16 to build with 2.16.7 API

Change-Id: I293d9d076ee179bb396197cd3b9aebb7d62231b6

GerritCodeReview/plugins_quota,GerritCodeReview/plugins_quota,GerritCodeReview/plugins_quota