Update travis environment properties.
Update travis environment properties.

rafinskipg/corbel-platform.github.io,bq/corbel-doc,corbel-platform/corbel-doc,corbel-platform/corbel-doc,bq/corbel-doc,corbel-platform/corbel-doc,corbel-platform/corbel-platform.github.io,bq/corbel-doc,rafinskipg/corbel-platform.github.io,bq/corbel-doc,corbel-platform/corbel-platform.github.io,rafinskipg/corbel-platform.github.io,corbel-platform/corbel-platform.github.io,corbel-platform/corbel-doc,corbel-platform/corbel-platform.github.io,rafinskipg/corbel-platform.github.io