The main impediment to bringing up aws machines in parallel using vagrant was the interaction between `vagrant-hostmanager` and `vagrant-aws`. If you disable hostmanager during the `up` phase, and run it after the cluster is up, parallel bringup is possible. The only caveat is that machines must be brought up in small-ish batches to prevent rate limit errors from AWS since `vagrant-aws` doesn't seem to have mechanisms to
This PR:
- disables `vagrant-hostmanager` during bringup
- adds a wrapper script to make it convenient to bring machines up in batches on aws
Author: Geoff Anderson <geoff@confluent.io>
Reviewers: Ewen Cheslack-Postava <ewen@confluent.io>
Closes#982 from granders/vagrant-disable-hostmanager