Upgrade bazlets to latest stable-2.16 to build with 2.16.1 API
Upgrade bazlets to latest stable-2.16 to build with 2.16.1 API

Change-Id: Id6e277d3b2c40d36c1e5b4b1bd8095b0c8ecac0b

GerritCodeReview/plugins_javamelody,GerritCodeReview/plugins_javamelody,GerritCodeReview/plugins_javamelody