no longer using stemcell-based warden root FS; warden must bring its own
As per examples, AWS CPI takes default_security_groups (plural)
[director] VM creator should deal with failure to create VMs [Fixes #47421571]
Increase Bosh root stemcell size to 2GB [Fixes #49457781]
[director] List snapshots returns more information
[cli] Add snapshots methods to director
Remove .ruby-version and rely on Gemfile
[cli] Added snapshot commands
[director] Added snapshot deployment api
[cli] Added take a snapshot for a deployment
[director] Convert timestamp to string when returning the list of snapshots
Eliminate the vestigial agent dir in stemcell build
[agent] add UNIX parent for Linux
[director] Added delete all snapshots of a deployment api
[cli] Added command to delete all snapshots of a deployment
[plugin_aws] Remove the snapshot command

Revert commits 50fdb0a and 0e3b408
[common] Refactor Retryable
[agent] just call super in Linux class
Fixed typo errors in snapshot commands
Merge pull request #164 from cloudfoundry/snapshots

Add Snapshots commands to Bosh CLI