Merge branch 'stable-3.0' * stable-3.0: Upgrade bazlets to latest stable-3.0 Upgrade bazlets to latest stable-2.16 Upgrade bazlets to latest stable-2.15 Bump required bazel version to 1.0.0rc2 Upgrade bazlets to latest stable-2.14 Change-Id: Ibf0ba38838f0c67548e363b679182f8446d8295e