Upgrade bazlets to latest stable-2.14 to build with 2.14.16 API
Upgrade bazlets to latest stable-2.14 to build with 2.14.16 API

Change-Id: I53e7c4cbbf2d37e0dfa95ec4b844253dd9d60dcb

GerritCodeReview/plugins_owners,GerritCodeReview/plugins_owners