Give Jenkins permissions on further s3 buckets
Give Jenkins permissions on further s3 buckets

There were a couple more jenkins jobs which ran scripts that used the
`deploy` user credentials. They were:

`make-g-cloud-live.py` - This script gets all the suppliers submitted
docs from the submissions bucket and uploads them to the documents
bucket - hence the extra documents bucket permission.

`upload-counterpart-agreements.py` - This uploads pdfs to the agreements
bucket - hence the permissions on the agreements bucket.

alphagov/digitalmarketplace-aws,alphagov/digitalmarketplace-aws,alphagov/digitalmarketplace-aws