Add S3_BUCKET variable to address "unrecognized macro" error.
Although the job passes, the error is confusing and unsightly.
The S3_BUCKET environment variable is needed for log shipping to s3.
Signed-off-by: Houa Yang <hyang@contractor.linuxfoundation.org>
Change-Id: I90af7149ab9f9e3e69491f8b37add6cfef54a826