Use S3 to sync files to instances when installing

[ossarga]

trafficstars

Rather than running {{rsync}} to copy the provisioning directory to all the nodes in the cluster, we should push the directory into S3. Once in S3, the install script can be updated to pull the correct provisioning sub-directory to the instance and then install it.

[rustyrazorblade]

Since the bulk of the files are small configs, I think we could push up just the deb packages. That would let us stick to most of the current workflow without changing everything around.