Add Terraform scripts for bootstrapping faasd on AWS

[mrsimonemms]

Using the existing DigitalOcean scripts as a basis, extend the bootstrapping to include AWS. This should replicate the existing DO infrastructure exactly, but not replace it . Existing functionality of #67 and #70 MUST be retained

Expected Behaviour

A faasd installation with TLS support is provisioned on AWS when applying the Terraform plan

Current Behaviour

No AWS support currently. Exists in DigitalOcean.

Possible Solution

Add additional aws folder with the scripts in. The existing main.tf file will need amending to allow for choice between DO and AWS

[mrsimonemms]

Will look at doing this over the weekend (12/09/20). Other contributions welcome, although I have a fairly clear idea in my head how I will do this.

[alexellis]

Sounds good to me