Merge branch 'stable-2.16' into stable-3.0 * stable-2.16: 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: Ide62321be8b0687041ade023a65cc7bc96901eef