Upgrade bazlets to latest master to build with 3.1.0-SNAPSHOT API
Upgrade bazlets to latest master to build with 3.1.0-SNAPSHOT API

Change-Id: I2ea881978503b8d59bfa3a818e53dd10e9ef0836

GerritCodeReview/plugins_javamelody,GerritCodeReview/plugins_javamelody,GerritCodeReview/plugins_javamelody