Add no-sign-request to aws s3 calls.
Add no-sign-request to aws s3 calls.

This way, credentials are not needed.

pvtodorov/indra,sorgerlab/belpy,johnbachman/belpy,sorgerlab/belpy,pvtodorov/indra,sorgerlab/indra,johnbachman/indra,johnbachman/belpy,johnbachman/indra,johnbachman/indra,bgyori/indra,pvtodorov/indra,bgyori/indra,sorgerlab/indra,pvtodorov/indra,bgyori/indra,sorgerlab/belpy,johnbachman/belpy,sorgerlab/indra