Removed support for 1.0 builder graceful shutdown on auto-scaling events
This alleviates Python 2 security vulnerabilities
Known Issues
On static (non-AWS) installations with NONE selected under storage driver settings, tests can be split only by file name or file size. If a user attempts to split tests by timing data, static instances will split them by file name instead.
If any changes have been made to your networking configuration from the default, you should run the following steps to ensure you can use SSH to inspect your builds (for further information on SSH reruns see the SSH Rerun Guide):
For customers using AWS, make sure that you have the latest Launch Configuration configured for Nomad clients, and that exiting Nomad clients were spun up using the Launch Configuration.
On each Nomad Client machine, create /etc/circleci/public-ipv4
This file should contain the public (if applicable) or private IP of the nomad client
