Goal:

• Enable using AWS launch templates to tweak parameters of launched instance  

Acceptance Criteria:

• Customers during provisioning set up can select from Launch templates they have defined in associated AWS account
• Customers can omit selection of launch template and launch still works
• If Launch template is selected, we use it for launching the VM
• It is disabled by default and available only when feature flag is toggled on.

Critical Path

• User selects an existing Launch Template in the UI which overrides any other setting (e.g. ssh key or instance types).
• No validation is performed in the first version, user can select both pubkey in the wizard and via launch template.
• New and Edit links are shown next to Launch Template drop down which lands the user at the AWS console.