Does FireCloud always allocate VMs from google's us-central1 region
We want to move some data off of our workspaces' multiregional cloud storage to regional storage in order to reduce our storage costs. In order to be able to continue running analyses on the data residing in regional storage, the the VMs that FireCloud/Cromwell launches need to be in the same region as the regional storage. Are the VMs provisioned by Firecloud to run tasks always in the us-central1 region. Is this the default region? Is there a way of overriding cromwell's default region?