Create build/verify/unittest/bazel jobs for release 1.8
Create build/verify/unittest/bazel jobs for release 1.8

GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid