Merge branch 'stable-3.0' into stable-3.1 * stable-3.0: Bump Bazel version to 3.0.0 Upgrade bazlets to latest stable-2.16 to build with 2.16.17 API Upgrade bazlets to latest stable-2.16 Change-Id: I7a9d754bc6d4834315d5fe4d728cfa36e26ac926