⚠ add custom-sized VM to cloud demo

[l3acon]

No description provided.

[l3acon]

@jce-redhat this is what I had, it's pretty bare-bones so totally open to suggestions.

[willtome]

LGTM

[jce-redhat]

it might be simpler to just edit the existing cloud/setup.yml and add a new survey question to the Cloud / AWS / Create VM job template. the blueprint already specifies the aws_instance_size variable for each blueprint, so the new survey question would just override it.

[jce-redhat]

i tested this addition to the survey for "Cloud / AWS / Create VM" and it works. using require: false is key so that if no value is provided for the instance type, it will default to whatever is in the VM blueprint.

        - question_name: AWS Instance Type (defaults to blueprint value)
          type: text
          variable: create_vm_aws_instance_size
          required: false

EDIT: corrected variable name

[l3acon]

That is obviously simpler and better, opened new PR #97