Upgrade bazlets to latest stable-2.16
Upgrade bazlets to latest stable-2.16

- Add repository rule to provide gerrit api version

Change-Id: I57515a908e7c31b01165a829ed8f427a85ee12de

GerritCodeReview/plugins_javamelody,GerritCodeReview/plugins_javamelody,GerritCodeReview/plugins_javamelody