Bump Terraform version on Jenkins to 0.9.1
Bump Terraform version on Jenkins to 0.9.1

Upgrade the version of Terraform used on Jenkins to 0.9.1. This change
coincides with the Terraform configuration changes in https://github.com/azavea/raster-foundry-deployment/pull/35.

azavea/raster-foundry,raster-foundry/raster-foundry,azavea/raster-foundry,raster-foundry/raster-foundry,azavea/raster-foundry,aaronxsu/raster-foundry,aaronxsu/raster-foundry,aaronxsu/raster-foundry,azavea/raster-foundry,azavea/raster-foundry,raster-foundry/raster-foundry,aaronxsu/raster-foundry