Upgrade bazlets to latest master to build with 3.1.0-rc0 API
Upgrade bazlets to latest master to build with 3.1.0-rc0 API

Change-Id: I15a6c688bd512b135a5f6b1f47ef38217b527a8e

GerritCodeReview/plugins_javamelody,GerritCodeReview/plugins_javamelody,GerritCodeReview/plugins_javamelody