Merge branch 'stable-2.16' into stable-3.0 * stable-2.16: Bump bazel version to 1.0.0 Upgrade bazlets to latest stable-2.16 to build with 2.16.12 API Upgrade bazlets to latest stable-2.15 to build with 2.15.17 API Change-Id: I28bad7357183524093d823bad7aa00800871dc59