Add S3_BUCKET variable to address "unrecognized macro" error.
Although jobs are passing, 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: I94276ec56e6fe3dfa9c5589acea15ce014e7fc51
NEXUSPROXY=https://nexus.fd.io
PACKAGECLOUDPROXY=https://packagecloud.io/fdio
PCIO_CO=fdio
+S3_BUCKET=
SIGUL_KEY=fdio-release-2018
SILO=production
NEXUSPROXY=https://nexus.fd.io
PACKAGECLOUDPROXY=https://packagecloud.io/fdio
PCIO_CO=fdio
+S3_BUCKET=
SIGUL_KEY=fdio-sandbox
SILO=sandbox