switch perf-able to using same node type we use for other spot instances,
because otherwise it never finds any available capacity.
we switch the perf-able script to use the standard get_value function
instead of direct jq calls.
we try to grab server logs if the restore fails in the hopes of finding
out why the restore very occasionally fails.
* spot instance test
* update outputs.tf to provide spot instances
* uptate outputs.tf data_node_ips
* propogate spot instance request tags to the instances
